Washington Monument Facts· Located in Washington DC· 169.29 metres high· It consists of 36,491 stones· It's the highest structure in Washington· It's one of the highest structures in the world· Fifty flags surround the base of it, symbolizing the 50 states of the USA History· It was built in honour of George Washington, the first president of the USA· The cornerstone was laid on July 4, 1848· Due to several setbacks, the monument stood incom