Boasting over 25 million visitors every year, Union Station is the busiest destination in Washington, DC. Originally opening in October of 1907, the station has seen a lot of history over the years during its life as a central transportation hub. While the station is widely visited as a destination for tourists, it is also a bustling hub of restaurants and shopping as well. Retailers like L'Occitane, MAC cosmetics, H&M, Papyrus and much more sit under this roof, all told there are three levels of shopping.