A city steeped in history, San Antonio, Texas, is a destination not to be missed. On the top of most tourist lists is the Alamo, one of the more famous Texas landmarks and site of a legendary battle that included such American icons as Davey Crockett and James Bowie. The San Antonio IMAX Theatre at Rivercenter offers a 45-minute presentation on the history and battle of the Alamo. While visiting the San Antonio Missions National Historical Park, four 18th-century frontier missions connected by recreational areas are on-hand to explore. Underground tours of natural formations are conducted at the Natural Bridge Caverns, with its mazes of subterranean tunnels, nooks and crannies. Families will find plenty to do, as San Antonio is home to Sea World, Ripley's Believe It or Not! and the San Antonio Children's Museum. Day trips around Greater San Antonio include destinations such as New Braunfels and Seguin, which both lie less than a 40-minute drive away.