Serving Congress and the Supreme Court, preserving America's Capitol, and inspiring memorable experiences

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Bartholdi Fountain
In 1877 the United States paid $6,000 for an iron fountain sculpted by...

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Map of Capitol Hill
View a map of the U.S. Capitol and other buildings and grounds cared for by the...

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Small Business Program
Information for Small Businesses interested in doing business with the...

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Hart Roof Repair Lift
Construction activities for the repair and replacement of the Hart Senate...

Materials

  • Marble
    Marble is used throughout the U.S. Capitol Building, the congressional office...
     
  • Cast Iron
    Cast iron was used extensively in the U.S. Capitol’s mid-19th century House...
     
  • Sandstone
    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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