National Historic Landmark-Augustus Lutheran Church

National Historical Landmark-Augustus Lutheran Church

Dedicated in September 1745, this plain sandstone structure with a polygonal apse and gambrel roof, exemplifies regional and church architecture typical of the 18th-century German settlers of Pennsylvania.

Courtesy National Park Service National Historical Landmarks

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National Historic Landmark-Athenaeum

National Historical Landmark- Athenaeum

Completed in 1847, this is one of the first Italian-style palazzo designs in America.

Architect John Notman (1810-1865) designed this structure; his design was the winner in a competition in which Strickland, Haviland, and Walter all took ...

National Historic Landmark-American Philosophical Society Hall

National Historical Landmark- American Philosophical Society Hall

Since 1789 this two-story late-Georgian brick building has housed the fortnightly meetings of one of America's oldest and most honorable learned societies.

The organization traces its origins to 1743, when Benjamin Franklin publicly urged ...

National Historic Landmark-Allegheny Portage Railroad

National Historical Landmark- Allegheny Portage Railroad of the Pennsylvania Canal

This first railroad over the Allegheny Mountains operated from 1834 to 1854 and was considered a technological marvel of its time.

An inclined plane, it carried canal boats over a 36-mile ...

National Historic Landmark-Allegheny County Courthouse and Jail

National Historical Landmark-Allegheny County Courthouse and Jail

When architect Henry Hobson Richardson realized his days were numbered, he wrote, Let me have time to finish Pittsburgh and I should be content without another day.

He was referring to the massive buildings ...

National Historic Landmark-Alfred N. Richards/David Goddard

National Historical Landmark- Alfred Newton Richards Medical Research Laboratories and David Goddard Laboratories Buildings

Laboratories (the latter named Biology Building before 1983) are nationally significant as one of the most important works of mid-twentieth-century American modernism and of Louis Isadore ...

National Historic Landmark-Edward G. Acheson House

National Historical Landmark- Edward G. Acheson House

From 1890 to 1895 this brick house was the home of scientist Edward G. Acheson (1856-1931). In all probability it is also the site where, in 1891, he conducted experiments that led to ...

National Historic Landmark-Academy Of Music

National Historical Landmark-Wanton-Academy Of Music

Opened in 1857, this is the country's oldest musical auditorium retaining its original form and serving its original purpose. Architect Napoleon Le Brun was influenced by European opera houses, and designed an auditorium famed for its ...

National Historic Landmark-Wanton-Lyman-Hazard House

National Historical Landmark-Wanton-Lyman-Hazard House

Built probably in 1696, this structure illustrates the architectural transition from 17th to 18th century styles. It was damaged by Stamp Act riots in 1765 when occupied by a Tory Stampmaster.

Courtesy National Park Service National ...

National Historic Landmark-Vernon House

National Historical Landmark- Vernon House

This 18th century, two story structure is an academically correct late-Georgian frame residence noted for its fine interior trim and stairway.

The house served as headquarters for the Count de Rochambeau when the French allies were ...