About
A new page is being written in the storied history of St. Louis Union Station. Retrofitted in the former train station, the St. Louis Aquarium will take you on an aquatic adventure like no other. From alligator snapping turtles to zebra sharks and personalized interactive experiences to community-building activities, this all-ages attraction has something for everyone.Kid-Friendly Fun in a Historical Setting
Once one of the largest and busiest passenger rail terminals in the world, St. Louis Union Station is now a wellspring of family-friendly activity.
30 Things to Do in St. Louis for Less Than $30
Traveling on a budget? St. Louis has an abundance of unforgettable activities, including the St. Louis Aquarium at Union Station, that won’t break the bank.
201 S. 18th St.
St. Louis,
MO
63103
TripAdvisor Rating:
272 Reviews | Write a ReviewNot worth the price or time
Reviewed By Wade080 July 2026Expensive for so few of tanks. Very disappointed
Full ReviewFun aquarium
Reviewed By 1024mh June 2026Both of my boys loved it! It is not a very big aquarium but nice none the less. We spent about 2.5 hours there, but I think it is geared towards children and I don't see adults without kids spending...
Full ReviewFriendly staff period!
Reviewed By denny C June 2026we were very surprised at the knowledge and attention to detail of the staff from start to finish as we went through. One person we do remember was a younger person ( i think Heather) just plain...
Full ReviewHours
Hours vary by day and season – check website for more information.
What's Nearby
1894 Cafe at St. Louis Union Station
Located on the second floor of Union Station, this casual family-friendly café will facilitate aquarium goers with a…
Train Shed at St. Louis Union Station
The Train Shed will be a unique gathering place filled with contemporary cuisine and creative cocktails in one…
Grand Hall at St. Louis Union Station
The perfect dining destination prior to a sports game, concert or downtown festival, The Grand Hall’s central downtown…
TripAdvisor Rating:
272 Reviews | Write a ReviewNot worth the price or time
Reviewed By Wade080 July 2026Expensive for so few of tanks. Very disappointed
Full ReviewFun aquarium
Reviewed By 1024mh June 2026Both of my boys loved it! It is not a very big aquarium but nice none the less. We spent about 2.5 hours there, but I think it is geared towards children and I don't see adults without kids spending...
Full ReviewFriendly staff period!
Reviewed By denny C June 2026we were very surprised at the knowledge and attention to detail of the staff from start to finish as we went through. One person we do remember was a younger person ( i think Heather) just plain...
Full Review