Visitor Center open Mon.-Sat. 8:30-4:30. Last tour begins 1 hour before closing. Outdoor tours are offered seasonally. Half-hour tours of the Brumidi Corridors are offered Mon.-Fri. at 2; no reservations are necessary, but passes are required from one of the information desks on the visitor center's lower level. House and Senate galleries open Mon.-Fri. 7-7. Tunnel open Mon.-Sat. 8:30-4. Closed Jan. 1, Inauguration Day, Thanksgiving and Christmas.