While visiting Houston we decided to check out the Space Center, we thought it would be a two hour venture, while the guided tour ($69.00 per person) was fabulous, afterwards we decided to hang around the museum to see all the other exhibits...we loved it, spent 6 hours there, had a decent lunch there and got to walk around the grounds. If you love science and are curious about space craft this is the place to go. It was so interesting and very well done. I would say do not miss this one! It was so much more than I thought it would be.