How did people compute before the invention of computers? A puzzling question lands you in the wondrous world of computing. Have hands-on fun by making your own abacus, and get to know Ada Lovelace, the first computer programmer before the invention of computers. The place to go to answer all your science-related questions - it's the One Stop Science Shop. Do-it-yourself experiments, a hologram entry phone, and fun stories about great scientists help visiting kids to understand some of the trickiest principles of science.