The Saint Louis Science Center has more than 700 hands-on exhibits that span the broad spectrum of science. We have something fun for everyone! In the Science Center you can watch staff test the laws of physics in live Amazing Science Demonstrations; sneak past a life-sized animatronic Tyrannosaurus rex and Triceratops; explore the night sky uninterrupted by weather, pollution, or city lights; build a replica of the Gateway Arch and much, much more.