You asked, we answered. Here are some of the most popular questions we get about the U.S. Capitol. The answers may surprise you!
Has the Capitol been used as a prison?
No, but a building known as the "old brick Capitol" was during the Civil War. Following the war the building was converted to residences.
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![Building.](/sites/default/files/styles/standard_sm/public/images/historical-facts/9494473537_5670ec1b03_b.jpg.webp?itok=xuOAk4I2)
How many original Olmsted trees are still on campus?
Approximately 45 of Frederick Law Olmsted's trees remain today, having endured more than a century of urban life on the front stage of American democracy.
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How many statues are there in the National Statuary Hall Collection?
Each state may contribute two statues.
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![Columns in a room with statues and a chandelier.](/sites/default/files/styles/standard_sm/public/6082053261_ebed27a879_o_1.jpg.webp?itok=o97fGuNO)
How many women are represented in the National Statuary Hall Collection?
There are thirteen women currently represented. View the list.
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How much did it cost to build the Capitol?
The U.S. Capitol is a unique structure, as it has been built in successive phases over the past two centuries. The estimated historical cost of the United States Capitol as of 2003 was $133 million.
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![Exterior view of a building.](/sites/default/files/styles/standard_sm/public/6080137063_3e6c91ee8b_o_3.jpg.webp?itok=QXjG1117)