The Blue Room is located in the center of the State Floor of the White House. The President uses the Blue Room to receive many of his guests, from foreign heads of state to members of Congress. Originally decorated in red, blue was selected as the color for the drapes, upholstery, and carpet during an 1837 refurbishing under President Martin Van Buren. Blue walls were introduced in 1902. It has since been redecorated, but has always maintained its famous blue color scheme. During the holidays, the Blue Room is the location of the official White House’s Christmas tree.