Congress is divided into two institutions: the House of Representatives and the Senate. The two houses of Congress have equal but unique roles in the federal government.

It is commonly referred to as Capitol Hill and houses all U.S. House of Representatives and U.S. Senate office buildings, the Library of Congress, and the symbol of democracy, the U.S. Capitol.

Who is the owner of the Capitol building? Is it owned by Washington DC or the United States government? It is the property of the Legislative Branch of the US Government, and is controlled by the US Congress. Maintenance is provided by the Architect of the Capitol.

The United States Capitol crypt is the large circular room filled with forty neoclassical Doric columns directly beneath the United States Capitol rotunda. It was built originally to support the rotunda as well as offer an entrance to Washington's Tomb.