Chemosphere, Modernist residence in Hollywood Hills, United States.

Chemosphere is a one-story octagonal house at 7776 Torreyson Drive, set on the San Fernando Valley side of the Hollywood Hills. Its shallow octagonal drum of horizontal grey boards, ringed by a band of windows under a thin roof rim, sits on a concrete column nearly 30 feet high and 5 feet wide. A deep deck beneath the drum is braced by an angled strut, and the house is reached by a funicular.

Leonard Malin, a young aerospace engineer, received the sloping lot from his father-in-law and commissioned John Lautner, who produced a second design after Malin rejected the first. Built for $140,000, the house was partly funded by barter with the Southern California Gas Company and Chem Seal Corporation, whose resins inspired the name. The Malins sold it in 1972; owner Richard Kuhn was killed in a 1976 robbery.

The house has served as a filming location for television and movies for decades, shaping how people imagine Hollywood Hills in popular culture. Its distinctive shape and floating design make it instantly recognizable as a symbol of futuristic architecture in Los Angeles.

The house stands at 7776 Torreyson Drive, just off Mulholland Drive on the San Fernando Valley side of the Hollywood Hills. It is a private residence, so it is seen from outside only. Access to the house itself is by a funicular, with steps as an alternative route.

The utility and building supply companies that sponsored the project directly influenced the house's name. This was an unusual way to fund and name a private residence.