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

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This painting depicts Christopher Columbus and members of his crew on a beach in the West Indies, newly landed from his flagship Santa Maria on October 12, 1492.
Landing of Columbus
This painting depicts Christopher Columbus and members of his crew on a beach...
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A view of the Capitol Visitor Center lit up at night
Accessibility Services
The Office of Congressional Accessibility Services (OCAS) provides a variety...
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Yellow flowers in front of the Capitol Building
Publications
The Architect of the Capitol annually publishes a wide variety of publications...
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2008 Capitol Christmas Tree
U.S. Capitol Christmas Tree Will Shine on December 2
The U.S. Capitol Christmas Tree will be lit during a ceremony held on Tuesday,...
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Materials

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

Cast Iron

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Marble

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Sandstone

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