The Adventures of Tom Sawyer is set in St. Petersburg, a town based on Hannibal, Missouri, where Mark Twain grew up: the Boyhood Home, Cardiff Hill and Mark Twain Cave.
Five stops follow the novel from the whitewashed fence to the cave where Tom and Becky Thatcher get lost, on the Mississippi's west bank. Jackson's Island, the pirates' hideaway, has no identified real model, so that stop marks the town and the river.
Huck Finn fakes his own murder and, with Jim, who has run away from slavery, takes a raft down the Mississippi. Their goal is Cairo, where Jim would be a free man the minute he saw it. They miss it in the fog and drift on into slave country, past a feud, two con men and a farm with the book's last twist.
Twain built St. Petersburg from his boyhood town of Hannibal. Most places in the novel are invented, so each pin marks a real landmark or stand-in, and the Grangerfords' country and Bricksville stay off the map.
