4 one-day passes to Hands On! Discovery Center Hands On! Discovery Center is a science center offering fun interactive programs and experiences that include immersive interactive exhibits, a musical Tesla coil, giant building blocks, a 3-story Paleo Tower, and an art studio. Guests are invited to engineer a rocket, create a masterpiece, and uncover something new. Get up close and personal with an active fossil dig site dating back 5 million years with exhibits and programs featuring plant and animal fossils that have been unearthed at the Gray Fossil Site including tapir, red panda, rhinoceros, a 10-ton mastodon, and many more!