The Springfield Knowledgeum is a highly interactive museum located in Springfield. The museum has many unusual and interactive exhibits, including a giant book, a Mars section, a slide shaped like a DNA double-helix, a gigantic microscope, a giant swinging pendulum near the entrance, an earthquake simulator, and a Sex Education pavilion (with an arcade game involving shooting sperm at ova). The ceiling was donated by the Velcro company (made out of Velcro) and the floor was donated by American Superball.