Hannibal was the boyhood home of Mark Twain, and the author’s spirit is alive and well at a variety of attractions around the city. You can visit places such as the Mark Twain Boyhood Home and Museum, explore Mark Twain Cave and Cameron Cave, journey to the top of Cardiff Hill (like Tom and Huck did), take a riverboat ride on the Mississippi River or spend time shopping the city’s unique retailers, including several located in the downtown area.