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A group of visitors walking in in front of the Capitol Building
Building, Infrastructure, People The Architect of the Capitol is committed to...

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AOC employee working on touching up columns in Statuary Hall
Next time you're in Statuary Hall on the second floor of the U.S. Capitol...

Projects

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    Stone Preservation

    Watch our video on why stone preservation across Capitol Hill is a top priority.

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    Crumbling Down and Building Up

    Addressing the stone pandemic takes a team of historic preservationists, structural engineers and stonemasons, among others.

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    Masonry at the AOC

    The hands-on work caring for the stone founds across Capitol Hill falls to AOC masons.

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    Sandstone on Capitol Hill

    During the early years of Washington, D.C., sandstone was commonly used because could be found locally and was easy to…

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Stone Preservation on Capitol Hill