Washington National Cathedral
It is the sixth largest cathedral in the world, and the second largest in the United States.
It is the fourth tallest structure in Washington D.C.
The building started its construction in 1907 with Theodore Roosevelt and finished 83 years later with George W H Bush in 1980.
Carvings on the building are still not fully completed.
Almost 400,000 people visit the Washington National Cathedral every year.
Average attendance was 1667 people a service in 2009.