The Cathedral of Our Lady of the Angels is a Catholic cathedral located in Downtown Los Angeles and serves as the mother church for the archdiocese of Los Angeles. It is shown in the Season 10 episode, "Hell on Earth 2006".
As Satan plans to have a Sweet 16-style Halloween party in Los Angeles, a group of Catholic priests and bishops with young naked boys on leashes meet at the cathedral. They are addressed by Cardinal Roger Mahony, who informs them that the party is supposed to be "completely off the hook", but they were not invited. They become upset upon hearing this news before one of them reveals that they will call in the Fire Marshall to shut it down.