The Tunnels Under Capitol Hill

Underneath the palatial government buildings on Capitol Hill lies an underground network of tunnels connecting the United States Capitol to the Library of Congress, the Senate Office Building, the Home Office Building, the Supreme Court, the House of Representatives and other government buildings.

You can learn more about Washington D.C.'s underground tunnels on the Capitol Hill Tunnels story map.  The interactive map not only shows you the tunnels and the buildings that they connect but provides a history of their construction. As you progress through the story map you can learn about when each of the government buildings and their connecting tunnels were constructed and what the tunnels are used for.

The Capitol Hill tunnels aren't the only subterranean networks in the capital. You can view maps of Washington's other transportation, utility and pedestrian tunnels on the Washington Tunnels website.