Museum of the World's Largest Cactus

The Museum of the World's Largest Cactus is where Mark the Mailman, Gary, William, and Teddy visit on their road trip in Act of Road. When William corrects a spelling error, he puts the sign up too close to the cactus, causing it to fall. Mark the Mailman then teases William about it. It is unknown if William was sued or even scolded, or if he got away with destroys the cactus altogether.