St. Louis Aquarium

St. Louis Aquarium at Union Station is a substantial urban aquarium organized around a progression from local freshwater environments to global rivers, tropical coastal habitats, and the deeper ocean. Its six galleries give the visit a geographic and ecological flow, beginning with creatures associated with the Missouri and Mississippi waterways before moving into broader aquatic environments. The aquarium houses more than 13,000 animals across 44 exhibits, giving it enough scope for a multi-hour visit without relying solely on a single large centerpiece.

The experience combines traditional viewing with interactive elements that encourage closer participation. Shark Canyon is a 250,000-gallon habitat featuring sharks, rays, and sea turtles, while four touch pools allow guests to interact with marine animals. Other galleries feature river otters, tropical fish, coral ecosystems, and animals adapted to darker ocean environments. The aquarium is particularly suited to travelers who want a structured indoor wildlife attraction with a strong emphasis on aquatic habitats and hands-on encounters.