The White House is the official residence and workplace of the president of the United States. Located at 1600 Pennsylvania Avenue NW in Washington, D.C., it has served as the residence of every U.S. president since John Adams in 1800 when the national capital was moved from Philadelphia.[2] "The White House" is also used as a metonym to refer to the Executive Office of the President of the United States.[3] The residence was designed by Irish-born architect James Hoban in the Neoclassical style.[4] Hoban modeled the building on Leinster House in Dublin, a building which today houses the Oireachtas, the Irish legislature. Constructed between 1792 and 1800, its exterior walls are Aquia Creek sandstone painted white. When Thomas Jefferson moved into the house in 1801, he and architect Benjamin Henry Latrobe added low colonnades on each wing to conceal what then were stables and storage.[5] In 1814, during the War of 1812, the mansion was set ablaze by British forces in the burning of Washington, destroying the interior and charring much of the exterior. Reconstruction began almost immediately, and President James Monroe moved into the partially reconstructed Executive Residence in October 1817. Exterior construction continued with the addition of the semicircular South Portico in 1824 and the North Portico in 1829.