Tickets for the Aquarium frequently sell out as we have limited tickets available for every 15 minute time slot. Advance purchase is required.
Click on Tickets for availability.
Sun -Thurs 9am -5pm
Fri and Sat 9am - 8pm
View Additional Hours & Directions
The 120,000-square-foot St. Louis Aquarium at Union Station is located in the former mall area within St. Louis Union Station.
201 S 18th St,
St. Louis, MO 63103
Enjoy the Aquarium 365 days a year for one low price.
Whalecome Back! We Are Now Open
Your journey through the St. Louis Aquarium starts along a freshwater river and the shallow waters of a salt marsh, then moves into the deep, dark abyss of the ocean open. Browse our galleries to see what’s in store for you when you spend an afternoon at the most unique indoor attraction in St. Louis!
Learn about the unique geography & history of Missouri’s local freshwater rivers & the aquatic animals that inhabit them in Changing Rivers.
Stand in awe of sharks in all shapes and sizes in our 250,000-gallon marine habitat, Shark Canyon, and learn why these misunderstood animals deserve our respect and protection.
Sea dragons, octopus & jellies – oh, my! Descend to the ocean’s depths and watch this mysterious sea world come to life.
Have questions about the St. Louis Aquarium at Union Station? Read through our FAQs. Want to be the first to receive exciting news and important updates about the St. Louis Aquarium at Union Station? Enter your name and email into the form on the right to subscribe to our mailing list. We’d be happy to send you info about new St. Louis Aquarium programs, special events, animal encounters, fun activities for adults and kids, and boatloads more.
Sign up to receive our newsletter
We’re making waves on Market Street as St. Louis’s newest family attraction.
There’s no time like the present to begin planning your visit to the St. Louis Aquarium at Union Station. Browse our guest accessibility and amenities , explore Union Station’s hotel and local restaurants, review parking tips and details, pre-purchase tickets and annual passes and explore our thrilling animal encounters and interactive programs. Come be a part of a community that cares about and acts to protect water and the life it sustains.