Which California state park contains the former outdoor M*A*S*H filming location?

The former outdoor M*A*S*H filming location is in Malibu Creek State Park.

The television series used an outdoor set on the former Century Ranch, a property once owned by 20th Century Fox in the mountains near Malibu. That setting represented the 4077th Mobile Army Surgical Hospital, while interior scenes were filmed on a soundstage at Fox Studios in Century City.

The site is now part of Malibu Creek State Park in Los Angeles County. The park’s landscape also appeared in the 1970 M*A*S*H film, making it a rare physical link between the movie and the later television series. The recognizable terrain around the outdoor set helped establish the show’s Korean War setting despite the production being filmed in California.

A common mix-up is to name the city of Malibu or the former Fox Ranch rather than the current park. “Fox Ranch” identifies the property’s former studio use; Malibu Creek State Park is the modern California state-park name. The outdoor set was damaged by a brush fire in 1982, and the area later suffered major damage in the 2018 Woolsey Fire.