Why was the capitol built?

The Burning of Washington in 1814 was an attack during the War of 1812 between British forces and those of the United States of America. On August 24, 1814, after defeating the Americans at the Battle of Bladensburg, a British force led by Major General Robert Ross occupied Washington, D.C., and set fire to many public buildings, including the White House (known as the Presidential Mansion at the time), and the Capitol, as well as other facilities of the U.S. government. The attack was in part a retaliation for the recent American destruction of Port Dover in Upper Canada.