The Washington Monument is the tallest obelisk in the world. Construction of the building began in 1848 and were finally completed in 1884.

Freemasons laid the cornerstone on July 4th, 1848 using George Washington’s Masonic apron, gavel and other Masonic regalia.

Washington Monument on Google Map
(38°53′22.09″N, 77°2′6.86″W)


image sources – top: Wiki; bottom: Wiki