In 2008 work was finally completed on a visitor center , which showcases the exhaustive background of a building that fairly sweats history. The center also provides free tours of the building - be on the lookout for statues of two famous residents per state, plus some of the most stunning, baroque/neoclassical architecture in the nation. The interior of the building is as daunting as the exterior, if a little cluttered with the busts, statues and personal mementos of generations of Congress members.