After your amazing Houston city tour, experience the excitement of outer space on a visit to Space Center Houston, the official visitor center for NASA’s Johnson Space Center where you can hop aboard a tram for an orientation tour. One of Houston’s top attractions, Space Center Houston boasts a number of interactive displays with everything from space artifacts to a full-size rocket and space shuttle. See real astronauts at work at the NASA facility and learn about space exploration from fascinating hands-on exhibits. Your day also includes a morning 75 minute Houston city sightseeing tour by open-top bus before your visit.