The Darby Meeting or Darby Friends Meeting House is located in Darby, Pennsylvania. The first recorded minutes of the meeting are dated July 2, 1684, not long after William Penn landed in nearby Chester to establish the colony of Pennsylvania. The first Friends meeting house in Darby was a log cabin built in 1687. The third and present building was built in 1805. It was used during the Revolutionary War by Continental soldiers. During the War of 1812, it was used by the U. S. Army as a hospital.

The 2 1⁄2-story building follows the Quaker tradition of simple and solid buildings. Its design is similar to that of the Horsham Friends Meeting House with separate entrances for men and women. Its walls are coursed fieldstone with stuccoed gables at each end. Brick fireplaces are also on each end of the interior. A covered porch extends along three sides of the ground floor, with the porch roof supported by simple wooden posts. Wooden posts also support the interior balcony. Most of the benches and other furniture are built of pine, but the floor is oak.

It was added to the National Register of Historic Places on September 13, 1978.

The large estate contained 19 buildings, with the largest the Mansion House, designed by Wilson Eyre, and completed in 1912. The Frog Tavern was built in 1731, and the Federal School was built in 1797.

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The complex of buildings was added to the National Register of Historic Places on May 15, 1979, and the Federal School was listed separately in 1971. The estate was built for financier Horatio Gates Lloyd, who was simultaneously a partner in Drexel and Co. and J.P. Morgan and Company.

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The area was landscaped the Olmsted Brothers (1911-1915); additions to the garden were made by Ferrucio Vitale. The gardens did not survive.

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Since Allgates' listing on the NRHP, the estate has been developed with several new large residences. Both the Mansion House and the Federal School remain, however.

The Grange Estate, also known as Maen-Coch and Clifton Hall, is a historic mansion in Havertown.

The mansion, an example of the Gothic Revival style, is presented in the state it was in at the turn of the 20th century. The grounds also feature Victorian gardens.

The house was owned by patriot and Philadelphia merchant John Ross during the late 18th century, who named his country estate after the home of Lafayette. Ross's house was frequented by several notable historic figures, including George Washington and Lafayette.

In 1815, the house was purchased by Manuel Eyre, Jr., son of Washington aide Manuel Eyre, who served with Washington during the Revolution. The Eyre family held the estate longer than any other, first from 1815 to 1846, and then, through their Ashhurst cousins, from 1848 to 1911.

The last family to occupy the mansion did so from 1913 until 1974, when it was sold to Haverford Township.

Parts of a c. 1700 residence may be incorporated in the carriage house. The main house, built in c. 1750 and expanded several times through the 1850s, was purchased by Haverford Township in 1974. The mansion is now maintained as a museum and community center, run by the Friends of the Grange. 

The building was added to the National Register of Historic Places in 1976 as The Grange.

Powder Mill Valley along Cobbs Creek was for almost 200 years a center of manufacture. Early grist and saw mills were followed by fulling and dyeing mills. The Nitre Hall Powder Mills, which gave the valley its name, were built by Israel Whelen shortly after 1800. Our young nation had growing needs for explosives and the mills prospered with an output of 800,000 pounds during the war of 1812. Nitre Hall Mills produced a quality and quantity of black powder in the U.S. second only to the Dupont Mills on the Brandywine. After the powder mills closed in 1840, Dennis Kelly bought the property and converted the buildings to the manufacture of textiles.

Nitre Hall, the ca.1810 home of the powder master, is the only building remaining from the industrial era of the valley. The brick floored ground level was converted to an apartment for caretakers in the 1960s.  No one currently lives in Nitre Hall, and work has been done to restore this area to its original layout, and includes a historic kitchen and gunpowder exhibit.  The parlor on the 2nd floor level is furnished in Empire style. Across the hall is the Historical Society Library with reference books and materials on the history of Haverford Township. Furnishings in this room are Victorian. Rooms on the third floor include two research rooms, available to the public by appointment, a room furnished as a child’s bedroom, and the main bedroom which includes a textile exhibit.

Nitre Hall and nearby Lawrence Cabin, ca. 1710, are also the site of the annual Heritage Festival, held the first Sunday in June, and the Colonial Living Program, held in September each year for the Township’s fifth graders. 

Pont Reading is a historic home located in the Ardmore section of Haverford Township. It was the residence of shipbuilder and architect Joshua Humphreys, in which he lived his entire life. It was named after his family's homestead, Reading Pont in England. Humphreys is most notable for his design of the famous USS Constitution, or "Old Ironsides". It was built of stone, now stuccoed, in 1730, around a log cabin dating to 1683. The rear kitchen wing was added in 1813. The building is an excellent example of upper-class colonial architecture.

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The house, which is a private residence, was listed on the National Register of Historic Places in 1972.

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In March 2007, Cookie Magazine published an article titled "To the Manor Born" about the house and its owners. The article included internal photographs. The house's owners since 2003 oversaw major restoration to maintain the property.

Lansdowne Park Historic District includes 103 contributing buildings; the majority are residences. Eighty-one of the houses were built between 1889 and 1891, with Queen Anne as the dominant architectural style. The remaining houses were built between 1899 and 1913 and include notable examples of the Dutch Colonial Revival and Georgian Revival styles. The oldest house is the Dickenson Farmstead, a 2½-story dwelling built in 1732 and expanded in 1790. A notable non-residential building located in the district is the former St. John's Episcopal Church (1901).

It was added to the National Register of Historic Places in 1987.

Twentieth Century Club of Lansdowne is a historic club building located at Lansdowne, Delaware County, Pennsylvania. It was built in 1911, and is a 1 1/2-story, rectangular stone and brick building measuring 43 feet, 10 inches, by 95 feet, 6 inches. It has a small rear wing, slate pyramid-shaped roof with two projecting front gables, and a large articulated chimney.

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It was added to the National Register of Historic Places in 1980.

The Thomas Massey House is a brick and stone colonial house, located on Lawrence Road near West Chester Pike in Broomall. The brick section was created by Thomas Massey, a Quaker, in 1696 as an addition to an earlier wooden house. Thomas's son Mordecai Massey likely tore down the wooden house and built the first stone addition during the 1730s. A stone walled kitchen was added in the early nineteenth century with a second story added about 1860. The house was donated to Marple Township in 1964 to avoid destruction. The Thomas Massey House is one of the oldest English Quaker homes in the Commonwealth of Pennsylvania.

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It was added to the National Register of Historic Places in 1970.

Dr. Samuel D. Risley House, also known as the Elton B. Gifford House, is a historic home located at Media, Delaware County, Pennsylvania. It was built in 1877, and is a 2 1/2-story, gray stone house in the Gothic Revival style. It has a slate covered intersecting gable roof. The building features a verandah and conservatory. The house was converted to apartments prior to 1967.

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It was added to the National Register of Historic Places in 1990.

The Thomas Leiper Estate, also known as Avondale, is an historic estate located in Nether Providence Township, It was built by Thomas Leiper around 1785, and named Strath Haven after Leiper's birthplace in Strathaven, Scotland. The estate includes the following: the three-story, yellow stuccoed mansion house, "Fireproof" vault, communal outhouse, barn, carriage house, smokehouse, warehouse, tenant's house, and quarry.

It was added to the National Register of Historic Places in 1971.

Wolley Stille, also known as the Joseph Sharpless House, is a historic home located at Wallingford, Delaware County, Pennsylvania. It is a fieldstone dwelling that consists of a two-story, pre-1700 building, with a Great Hall dated to 1700; a two-story addition built in 1751; and a service wing added in 1916. The house exhibits both Swedish and English Colonial elements of design and construction. The house was restored in 1915-1916, by architect Donald Robb, also added some Colonial Revival elements, such as enlarged dormer windows.

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It was added to the National Register of Historic Places in 1980.

Crosley-Garrett Mill Workers' Housing, Store and Mill Site, also known as Paper Mill House and the William Crosley Store and Mill Worker's House, is a historic mill-related complex located at Newtown Township, Delaware County. The complex consists of a four-family stone Workers' Housing unit (1828), with an attached store (1845), and the archaeological remains of William Crosley's Woolen Mill (1828-1861) and Casper S. Garrett's Union Paper Mill  (1869-1889).

The buildings house the Paper Mill House Museum and headquarters of the Newtown Square Historical Society.

It was added to the National Register of Historic Places in 2003.

St. David's Episcopal Church, often known as St. David's at Radnor or, less often, as Old St. David's, is a parish of the Episcopal Church in the United States of America, founded in the early 18th century and named after the Patron Saint of Wales. A Book of Common Prayer, given as a gift to Lydia Leamy in 1854, refers to St. David's as "Radnor Church". It has grown to be the largest congregation in the Episcopal Diocese of Pennsylvania, with some 950 active families and 3,000 members. 

The original church building, built in 1715 and the subject of a Longfellow poem, still stands. It is in nearly the same condition as when it was built, several new buildings having been constructed to house the growing congregation. The adjacent graveyard is a part of the historic site. The church property is divided by the borders of three townships, in two counties, often causing confusion as to the church's location. The church office is located at 763 South Valley Forge Road in Wayne, Radnor Township, Delaware County, Pennsylvania.

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It was added to the National Register of Historic Places in 1978.

Morton Morton House, also known as the Morton Mortonson House and Morton and Lydia Morton House, is an historic home located in Norwood, Delaware County. It was built about 1750, and consists of a 2-story, symmetrical brick house with a gable roof and a 1 1/2-story wing with a gambrel roof. The interior has a Georgian hall-parlor plan. The building was restored in 1971, and is open as a historic house operated by the Norwood Historical Society.

It was added to the National Register of Historic Places in 2000.

Ridley Creek State Park is a 2,606-acre Pennsylvania state park in Edgmont, Middletown and Upper Providence Townships, Delaware County, Pennsylvania in the United States. The park, about 5 miles north of the county seat of Media, offers many recreational activities, such as hiking, biking, fishing, and picnicking. Ridley Creek passes through the park.

Highlights include a 5-mile paved multi-use trail, a formal garden designed by the Olmsted Brothers, and Colonial Pennsylvania Plantation, which recreates daily life on a pre-Revolutionary farm. The park is adjacent to the John J. Tyler Arboretum. Ridley Creek State Park is just over 16 miles from downtown Philadelphia between Pennsylvania Route 352 and Pennsylvania Route 252 on Gradyville Road.

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It was added to the National Register of Historic Places in 1976.

The Federal School is a historic one-room schoolhouse located on Darby Road in Haverford near the Allgates Estate. It was established in 1797, and was called the Federal School because of the community's pride of being part of the Federal United States, but not much else is known about it until 1849, when the Commonwealth of Pennsylvania purchased the building and officially renamed it the Haverford Seminary Number 1. It served as a public school from then until Horatio Gates Lloyd bought it in 1940. After his family moved away it served as a storage building. The Historical Society of Haverford Township restored it in 1991. The Federal School now has 1849 school re-enactments for 4th Graders in the School District of Haverford Township.

The building was added to the National Register of Historic Places in 1971.

The Llanerch Public School is an early 20th century architect-designed elementary school, which both embodies early 20th century educational programmatic theories and is a design of the prominent and prolific school architect Henry DeCourcey Richards, in his form Blithe & Richards. 

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It is a two story building in the Colonial Revival style and clad in Holmesburg Granite. It opened for the 1913-14 school year. It served the Llanerch area of Haverford Township, a planned community of the early 20th century. 

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The school was later used as Stratford Friends School, which closed in 2009 and it is currently apartments. 

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The building was added to the National Register of Historic Places on April 10, 2017.

Merion Golf Club is a private golf club located in Haverford Township with two courses: the East Course, and the West Course. The East Course has been consistently rated by Golf Digest among America's greatest golf courses, and it has hosted five U.S. Opens, most recently in 2013.

In 1910, the membership decided to build a new course and chose 32-year-old club member Hugh Wilson, a Princeton University graduate, and fine player, to design it. Merion East opened in September 1912, and the original course was closed. The West Course, also designed by Wilson, opened in May 1914. The Merion Golf Club did not officially separate from the Merion Cricket Club until 1941.

Hugh Wilson had never designed a golf course, so he went on a seven-month trip to Scotland and England to study British courses. Several features of Merion East are derived from famous British courses, not the least of which are Merion's distinctive Scottish-style bunkers, which are now known as the "white faces of Merion" (named by top amateur player Chick Evans). Wilson's layout covers only 126 acres of land, a very small area for a golf course. It was ranked seventh in Golf Digest's "America's 100 Greatest Golf Courses" in 2005, and Jack Nicklaus has said of Merion East, "Acre for acre, it may be the best test of golf in the world."

Merion has held 18 United States Golf Association (USGA) championship tournaments, more than any other course. The first two, the 1904 and 1909 U.S. Women's Amateurs, were held at the original Haverford course. The first USGA men's tournament held at the East Course was the 1916 U.S. Amateur, won by Chick Evans. This was also the first time Bobby Jones appeared in a national championship; he was 14 years old. Jones would win his first U.S. Amateur in 1924, also held at Merion.

Merion was designated to the National Register of Historic Places in 1992.

An historic subdivision and national historic district located at Lansdowne, Delaware County, Pennsylvania. The district includes 70 contributing buildings in a residential area of Lansdowne. The subdivision consists of single and double houses, built between 1884 and about 1940, in a variety of popular architectural styles. It includes notable examples of the Colonial Revival, Tudor Revival, and Queen Anne styles. They are characterized by stone first stories, wood frame upper stories, and wood porches.

It was added to the National Register of Historic Places in 1998.

Lansdowne Theatre is a historic theatre building located in Lansdowne, Delaware County. It was built in 1927, and consists of a two story front section with street level shops and offices above, and a 1,400 seat auditorium. It was designed by noted theater architect William Harold Lee (1884-1971) and is in the Spanish Revival style. It recently received a new marquee and is in the process of being restored.

It was added to the National Register of Historic Places in 1986.

The Plank House is a one-and-a-half story, hall-plan house featuring a finished upper level and full cellar. The house is constructed using sawn planks fitted together with dovetail joinery and caulked with oakum in a manner similar to that seen in one of the only other plank houses known in the region, the Christopher Vandergrift House in New Castle County, Delaware. Some of the original riven lath remains on the interior of the house and it is felt that the walls were finished with plaster at the time of construction or soon thereafter. A stone and brick relieving arch in the cellar supports the fireplaces and chimney stack. The upper level of the house, accessed via a winder staircase located in the northeastern corner of the structure essentially mirrors the main room below except that it has an inclined garret ceiling, which follows the peak-pinned rafters. The upper room also features a fielded panel fireplace surround which is felt to be original. Both the architecture of the house and the archaeology indicate a probable construction date of circa-1735.

It was added to the National Register of Historic Places in April 2017.

The Media Armory, a historic National Guard armory, was built in 1908 for company H of the 6th Infantry Regiment of the Pennsylvania National Guard. The building was originally used for training and the storage of arms and ammunition, but has been converted for use into a Trader Joe's grocery store and the Pennsylvania Veterans Museum. The structure's intended military use is expressed by its heavily buttressed walls, broken battlements, and low flanking towers," according to a 1984 plaque affixed to the building by the Media Borough Council.

The company served in Mexican Border Expedition, and re-designated as company H, 111th Infantry, 28th Infantry Division, in France in World War I, and as Company M, in the South Pacific in World War II.

The building was designed by William L. Price and M H. McLanahan. Its construction is of random rubble and includes a basement and two stories. Solar panels, which are barely visible from the street, were added in 2004.

The Pennsylvania Veterans Museum opened in 2005 on Veterans Day. Exhibits include dioramas of the D-Day invasion and the Korean War, a mini-movie theater, military uniforms, weapons, photographs and oral histories of veterans' experiences.

The Armory was added to the National Register of Historic Places listings in 1989.

Tyler Arboretum is a nonprofit arboretum located at 515 Painter Road, Media, Delaware County, Pennsylvania. 

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The property's history began in 1681, when William Penn signed a "lease and release" agreement with Thomas Minshall, an English Quaker, for property in Pennsylvania that contained the site now occupied by the Arboretum. Between 1681 and 1944, the property was home to eight generations of the same family. The Arboretum itself started in 1825 when two brothers, Jacob and Minshall Painter, set aside land to systematically plant more than 1,000 varieties of trees and shrubs. In 1944, descendant Laura Tyler bequeathed the property, in memorial to her husband John J. Tyler, to be a nonprofit arboretum.

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It was added to the National Register of Historic Places in 2001.

"Westlawn", also known as Charles Essig House, is a historic home located at Wallingford, Delaware County, Pennsylvania. It was built in 1882, and is a 2 1/2-story, asymmetrical dwelling with a cross gable roof and faceted pentagon addition, in the Queen Anne style. It has a variety of exterior treatments including brick, clapboard, novelty shingles, half-timber beams, and stucco. It features gable dormers, a turret, a square tower, wraparound porch, and three corbelled chimneys. The house was built for Charles Essig, organizer and first dean of the School of Dentistry, University of Pennsylvania.

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It was listed on the National Register of Historic Places in 1988.

An historic covered bridge built in 1860, uses a Burr Truss design and carries Goshen Road over Crum Creek on the border between Delaware County and Chester County, Pennsylvania. It is the only covered bridge remaining of the 30 which once stood in Delaware County.

It was closed to traffic in 1941 and was listed on the National Register of Historic Places in 1980.

The Hood Octagonal School is a historic one-room schoolhouse located in Newtown Square. It was built in 1841, and is a small, fieldstone, one-story, eight sided building with a wood shingled pyramidal roof. The school was abandoned about 1865, then restored in 1964.

It was added to the National Register of Historic Places in 2006.

Square Tavern, also known as the John West House, The Square, and Newtown Square Tavern, is a historic tavern located at Newtown Square, Delaware County, Pennsylvania. The original section was completed in 1742, and is a 2 1/2-story, rectangular gable roofed brick building, measuring 32 feet wide and 28 feet deep. A small two-story kitchen addition was built sometime before 1798, and later replaced with a two-story wing. The wing was removed during the 1981 restoration, which returned the building to its 1742 appearance. 

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It was added to the National Register of Historic Places in 1984.

Morton Homestead is a historic homestead that is part of Morton Homestead State Park in Prospect Park, Delaware County.
The homestead was founded in 1654 by Morton Mortenson, a Finnish immigrant, when the area was part of the New Sweden colony. Mortenson's great-grandson, John Morton, signed the Declaration of Independence in 1776. Parts of the current house date back to the 1698 with a large addition constructed in the 18th century.

The site was added to the National Register of Historic Places in 1970.