The western (front) side of the United States Capitol. The U.S. Capitol serves as the location for Congress, the legislative branch of the U.S. federal government. It is located in Washington, D.C., on top of Capitol Hill at the east end of the National Mall. The building is marked by its central dome above a rotunda and two wings. It is an exemplar of the Neoclassical architecture style.Photo credit: Noclip