1001 Pennsylvania Avenue, Office building in Washington, D.C., United States
1001 Pennsylvania Avenue is a large office building in the Federal Triangle district with a rectangular footprint and a distinctive outline. Inside, passageways connect to a spacious seven-story rotunda with an octagonal shape, allowing entry from all surrounding streets.
The building opened in 1987 and preserved five earlier facades within its structure, including the 1909 United States Storage Building along Tenth Street. This approach reflected how modern development was designed to respect the area's architectural layers.
The building marks where federal and commercial Washington meet, with architectural details that echo the Beaux-Arts style of neighboring structures. Walking around it, you notice how older facades were carefully integrated into the modern exterior.
The building is easy to enter from multiple street-level doors that all lead to the central atrium, making navigation straightforward. The regular layout and clear signage inside help visitors find their way around.
The northern side of the building features three horizontal layers that rise as they step back, a design choice that makes the structure appear lighter than it actually is. This subtle feature shows how thoughtful proportions can soften the impact of large buildings.
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