Houston has lovely beaches and a wealth of 19th century architecture and is the fourth largest city in the USA. Places to visit are the Houston Theatre District and the Museum District which are full of collections of fine art from all over the world. Houston also has a zoo and is home to a staggering 337 parks. But the place that most people come to Houston to visit is the Space Centre where you can see displays of moon rocks, a shuttle simulator and recall the history of manned space flights, including the heroic efforts of the crew of Apollo 13 to get themselves back to earth.