U.S. Capitol Visitor Center (29 images)

The U.S. Capitol is seen through the glass roof of the new visitor center in Washington on November 11, 2008. The Capitol Visitor Center which include Emancipation Hall, the Exhibition Hall, two Gift Shops, the Restaurant and the two Orientation Theaters will be open to the public on December 2, 2008. (UPI Photo/Yuri Gripas)

Visitors view an exhibition on the construction of the Capitol Dome after the opening ceremony for the U.S. Capitol Visitor Center in Washington on December 2, 2008. The center, which took nearly a decade to plan and build, will welcome as many as 20,000 people a day. (UPI Photo/Roger L. Wollenberg)

U.S. Capitol visitor center in Washington is seen during the media preview on November 11, 2008. The Capitol Visitor Center which include Emancipation Hall, the Exhibition Hall, two Gift Shops, the Restaurant and the two Orientation Theaters will be open to the public on December 2, 2008. (UPI Photo/Yuri Gripas)

A view of the Capitol Dome is seen through a glass ceiling of the center during the opening ceremony for the U.S. Capitol Visitor Center in Washington on December 2, 2008. The center, which took nearly a decade to plan and build, will welcome as many as 20,000 people a day. (UPI Photo/Roger L. Wollenberg)