Best Answer: Generally speaking a story is ten feet, so the Washington Monument is roughly 55 stories high, with the observation room being at the 50th floor. read more
For example, in addition to the iconic structure in the nation’s capital, there’s a Washington Monument in Boonsboro, Maryland, consisting of a 34-foot-tall stone tower completed in 1827, and a Washington Monument in Baltimore featuring a 178-foot-high column finished in 1829. read more
The Washington Monument is a hollow Egyptian style stone obelisk with a 500-foot (152.4 m) tall column and a 55-foot (16.8 m) tall pyramidion. Its walls are 15 feet (4.6 m) thick at its base and 1 1 ⁄ 2 feet (0.46 m) thick at their top. read more