The Salt Lake City Union Pacific Depot is a spacious building on the western edge of downtown Salt Lake City, Utah. Built from 1908 to 1909, it harkens back to a more prosperous era in the history of American railroad travel. The main lobby, no longer used by Amtrak now serves as an entrance to the Gateway District development. However, most of the building is not used for its original purpose due to the marked decrease in rail travel over the several decades. Union Pacific now uses some of the space for offices and training areas.