Join 教育与家庭 upcoming events being held in Hannibal. Hannibal is a charming riverfront city in Missouri, USA, famous as the boyhood home of celebrated American author Mark Twain, offering rich cultural experiences, historic sites including the Mark Twain Boyhood Home & Museum, scenic river views, and annual events such as the National Tom Sawyer Days, providing visitors with a nostalgic journey through American literary history and a delightful getaway in the heart of the Midwest.