How tall is the washington monument?

Located almost due east of the Reflecting Pool and the Lincoln Memorial, the monument, made of marble, granite, and bluestone gneiss, is both the world's tallest stone structure and the world's tallest obelisk, standing 554 feet 7 11 ⁄ 32 inches (169.046 m) tall according to the National Geodetic Survey (measured 2013–14) or 555 feet 5 1 ⁄ 8 inches (169.294 m) tall according to the National Park Service (measured 1884). read more

The aluminum tip is placed on the top of the Washington Monument. It was the tallest building in the world upon its completion in 1884, standing 555 feet, 5.125 inches. To Great Heights. By a joint resolution passed on July 5, 1876, Congress assumed the duty of funding and building the Washington Monument. read more