The Saint Louis Zoo, located in Forest Park and offering free admission!
The park is home to the St. Louis Art Museum; the Science Center; the world famous St. Louis Zoo; the Jewel Box greenhouse; the Missouri History Museum; The Muny open-air theatre; biking, jogging and skating paths; a golf course; lakes; and other activities.
Tower Grove has been characterized as the largest and best preserved 19th-century Gardenesque style city park in the United States. Tower Grove Park is open daily from sunrise to 10 p.m.
Many visitors enjoy riding to the top of the Gateway Arch! There is also a free museum about St. Louis's role in westward expansion. The Gateway Arch Visitor Center is open 9am to 6pm. The last tram ride to the top goes up about an hour before closing
Although you won’t find any trains running, you can visit the St. Louis Aquarium, ride the gigantic St. Louis Wheel, or have fun at a number of smaller attractions like a carousel, mini golf, ropes course, and mirror maze.