History of the world's tallest buildings to be tall, but its true height is not known. For thousands of years, the Great Pyramid in Egypt was the tallest "structure" in the world, but the Great Pyramid is not considered a building since it is not habitable. The earliest structures now known to be the tallest in the world were the Egyptian pyramids, with the Great Pyramid of Giza, at an original height of , being the tallest man-made structure in the world for over 3,800 years, until the construction of Lincoln Cathedral in 1300. From then until the completion of the Washington Monument (capped in 1884)
Harry S Truman Building Harry S Truman Building The Harry S Truman Building is the headquarters of the United States Department of State. It is located in the capital city Washington, D.C., and houses the office of the United States Secretary of State. The Truman Building is located in the Foggy Bottom neighborhood at 2201 C Street, NW, bounded by C Street to the south, E Street, D Street, and Virginia Avenue to the north, 21st Street to the east, and 23rd Street to the west. It is located to the west of Edward J. Kelly Park and north of the National Academy of