Universal's House of Horrors was an attraction at Universal Studios Hollywood. It was the fifth variation of a walk-through maze housed in the "Stage 13" building.. The "Stage 13" building was previously home to different restaurants before being transformed into an attraction. The attraction opened in March 2007.

Universal Studios Hollywood is a film studio and theme park in the San Fernando Valley area of Los Angeles County, California. About 70% of the studio lies within the unincorporated county island known as Universal City while the rest lies within the city limits of Los Angeles, California. It is one of the oldest and most famous Hollywood film studios still in use. Its official marketing headline is "The Entertainment Capital of LA". It was initially created to offer tours of the real Universal Studios sets and is the first of many full-fledged Universal Studios Theme Parks located across the world.