Bartland was an amusement park in Springfield, owned by Sideshow Bob.
After Bob inherited money from Chester J. Lampwick, he built "Bartland", and asked Bart to come to the inauguration. Bart and Lisa then visited the park, but during their first trip they were almost killed, and they realized that all of the attractions were a death trap. Bob locked the two in the amusement park. Lisa then wrote "Help" with mustard on the hot dogs and threw them out onto the street from inside the amusement park. The police came to release them, not because they saw the text but because they wanted more hot dogs. Lisa told them that she had also found Lampwick, and that he is in the Hall of Mirrors. Bob then tried to kill Bart again, by holding a plate with a button that will cause the whole amusement park to explode. He pushed the button, but it turned out that Cletus did not connect the dynamite to the charge, so Bob got arrested.