In the mood for an all-day, science-themed family adventure? Space Center Houston is just what you are looking for. This huge facility is the official visitor’s center of NASA’s Johnson Space Center, where people can experience the history, present and future of space exploration. It’s the only attraction where visitors can see real astronauts training and get behind-the-scenes tours of an actual space facility. Use Space Center Houston coupons to save 50% off admission.