Colosseum

The Colosseum is a famous arena in Rome, Italy.

History
In Italy, Lisa spots a bus with a poster advertising Krusty the Clown's performance in Pagliacci. They meet up with him at the Colosseum, and he puts them in as extras. However, Sideshow Bob, Francesca Terwilliger and Gino Terwilliger find them and corner them on the stage while Krusty who is getting booed by the audience, went into a trap door and flees the stage, allowing Bob to perform the climax of Vesti la Giubba, (which his performance gains a standing ovation). Before they can kill them, though, Krusty's limo picks them up. The Terwilligers walk away with evil smiles, no doubt plotting revenge.