Take a tour of US Capitol Building in Washington, DC – part of the World’s Greatest Attractions series by GeoBeats. The U.S. Capitol Building in Washington, D.C., plays an important role in government and the city’s skyline. The building houses the legislative branches of the U.S. government. The design is a result of a competition created by the Founding Fathers in 1793. The original flag did not have nearly as many stars as it does today. Must of the dome as seen today was built during Abraham Lincoln's administration. The interior is highlighted by the Rotunda, whose high domed ceiling separates the chambers of the U.S. Senate and the House of Representatives. The Rotunda features some of the country’s most important and beautiful artwork. Undoubtedly, the Capitol Building serves as the integral part of Washington, DC.