St. Louis Union Station was once one of the largest and busiest passenger rail terminals in the world, helping move passengers from the east coast to the western part of the United States. Today it is home to more than 13,000 animals at the St. Louis Aquarium at Union Station, the 200-foot St. Louis Wheel, a carousel, an 18-hole mini-golf course, the mirror maze, a ropes course, the train park, and several restaurants to go along with the St. Louis Union Station Hotel. While you’re there, don’t miss the Grand Hall Light Show, which airs daily from 5 to 10 p.m. Laser lights dance on the 65-foot barrel-vaulted ceiling of the historic train station lobby, narrated by famous St. Louisans, including Jon Hamm, Bob Costas, Dan Dierdorf and Joe Buck. Grab a cocktail at the bar, sit back and enjoy the show.