Capitol Visitor Center open Mon.-Sat. 8:30-4:30. Last tour begins 70 minutes before closing. Outdoor tours are offered seasonally. Forty-five-minute tours of the Brumidi Corridors are offered Mon.-Fri. at 11 and 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 whenever either legislative body is in session. Tunnel open Mon.-Sat. 8:30-4. Closed Jan. 1, Inauguration Day, Thanksgiving and Christmas.