The Allegheny County Courthouse in downtown Pittsburgh, Pennsylvania, is part of a complex designed by H. H. Richardson. The buildings are considered among the finest examples of the Romanesque Revival style for which Richardson is well known.
The David Bradford House is a historic house museum at 175 South Main Street in Washington, Pennsylvania. Completed in 1788, it was the home of David Bradford, a leader of the Whiskey Rebellion. It has both architectural and historic importance, and was designated a National Historic Landmark in 1983. It is open weekly between April and November, or by appointment.
Bethel African Methodist Episcopal Church of Monongahela City is a historic church at the junction of 7th and Main Streets in Monongahela City, Pennsylvania.
The Washington County Jail is located on Cherry Street, beside the courthouse, in downtown Washington, Pennsylvania.
The Roberts House is a historic building in Canonsburg, Pennsylvania, listed on the National Register of Historic Places. It is designated as a historic residential landmark/farmstead by the Washington County History & Landmarks Foundation. The Greater Canonsburg Heritage Society erected a historical marker near the house, which is the last remaining structure from Jefferson College.
The Sackville House was an historic, American building that was located at 309 East Wheeling Street in East Washington, Pennsylvania before it was demolished in 1980.
The Canonsburg Armory is a former Pennsylvania National Guard armory in Canonsburg, Pennsylvania. It was listed on the National Register of Historic Places on December 22, 1989.
The Hawthorne School was a historic, Tudor Revival school building in Canonsburg, Pennsylvania. It was listed on the National Register of Historic Places on May 8, 1986.
The James Thome Farm is a historic farm located in Eighty Four, Pennsylvania. It was designated as a historic residential landmark/farmstead by the Washington County History & Landmarks Foundation, and is listed on the National Register of Historic Places.
The Pennsylvania Railroad Freight Station, also called the Chartiers Valley Railway Freight Station, is a historic, former train station building in Washington, Pennsylvania. It was listed on the National Register of Historic Places on July 21, 1995.
The Washington Armory is a former Pennsylvania National Guard armory in Washington, Pennsylvania. It was designed by W. G. Wilkins Company. It was listed on the National Register of Historic Places on May 9, 1991.
The California Area Public Library is the public library serving California, Pennsylvania and is a branch of the Washington County Library System. The library is located in the former Pennsylvania Railroad Passenger Station, which was listed on the National Register of Historic Places in 1979.
Centerville Historic District is a historic district in Centerville, Pennsylvania. Centerville represents an intact example of the "pike town" typical of the National Road in Pennsylvania. Little commercial activity remains in the town today, but the ninety-four contributing buildings in the district includes taverns, residences, shops, and services buildings typical of the rise and decline of the National Road.
Philip Friend House is a c. 1807 historic farm house in North Bethlehem Township, Pennsylvania, US. The stone house is forty feet by thirty feet, two-story, five-bay, and gable-roofed. Contributing outbuildings include a barn, springhouse, wash house, and privy.
The Harrison House was an historic building which was located in Centerville, Pennsylvania.
The Huffman Distillery and Chopping Mill is an historic complex of buildings which is located in Somerset Township, Washington County, Pennsylvania, United States.
Plantation Plenty, also known as the Isaac Manchester House, is an historic American building which is located in Avella, Pennsylvania.
Old Main is a historic building on the campus of Pennsylvania Western University California in California, Pennsylvania.
Robert Parkinson Farm is a historic property located in Morris Township, Pennsylvania, United States.
Levi Wilson Tavern is a historic building in Buffalo Township, Pennsylvania
