Stewards of the iconic buildings and grounds of Capitol Hill since 1793.

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A black and white photograph of the United States Capitol in 1846.
The history of the United States Capitol Building begins in 1793. Since then,...

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Screenshot of Google Maps image of United States Capitol and surrounding areas.
Located at the center of Washington, D.C., the U.S. Capitol Building and other...

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Photo of Capitol Hill steps.
Download a PDF of the full list.

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Susan Dworkin photo.
Learn about climate change and staple foods at noon on October 24 at the U.S...

Materials

  • A row of marble statues in National Statuary Hall in the U.S. Capitol.
    Marble is used throughout the U.S. Capitol Building, the congressional office...
     
  • Nighttime view of the cast iron used in the making of the Capitol's dome.
    Cast iron was used extensively in the U.S. Capitol’s mid-19th century House...
     
  • Sandstone walls and paintings of the U.S. Capitol Rotunda
    Sandstone was a common building material during the early years of Washington...
     

The materials used in the construction of the Capitol were chosen with care to ensure the building would be a lasting landmark. Learn more about these building materials, why they were used, and where they came from.

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