Tickets for the Aquarium frequently sell out as we have limited tickets available for every 15 minute time slot. Advance purchase is strongly recommended.
Click on Tickets for availability.
*last entry will be 1 hour before close
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.
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!
Visit our Missouri Aquarium to learn about the geography & history of local freshwater rivers & the aquatic animals that inhabit them.
Featuring varieties of sharks & a 250,000-gallon tank, Shark Canyon is the largest St. Louis attraction found within our Union Station Aquarium.
Jellyfish, eels & sea dragons – oh, my! Descend to the coral-rich floor of The Deep & witness its majestic sea world come to life.
Want to be the first to receive exciting news and important updates about the St. Louis Aquarium at Union Station? We’d be happy to send you info about new St. Louis Aquarium programs, special events, animal encounters, discount tickets, fun activities for adults and kids, and boatloads more. Read through our FAQs and enter your name and email into the form to subscribe to our mailing list.
Sign up to receive our newsletter
We’re making waves on Market Street as one of the year’s most anticipated St. Louis attractions for families. And you’re invited to join in on Union Station’s revival !
There’s no time like the present to begin planning your visit to our Union Station aquarium in Downtown St. Louis. Browse our aquarium amenities, explore Union Station hotel and local restaurants, review parking tips and details, pre-purchase tickets and memberships, and explore our thrilling animal encounters and interactive programs. With your help, we’ll build a community that cares about and acts to protect our waters and the life it sustains.