The Mission Inn Foundation was established in 1976 to support the preservation and restoration of the historic Mission Inn, and initially to oversee its operation under the City of Riverside’s Redevelopment Agency. In December 1992, Duane Roberts purchased the Mission Inn Hotel & Spa, which remains privately owned today. The Mission Inn Museum, operated by the Foundation, opened in 1993 alongside the reopening of the hotel after a seven-year restoration. In October 2024, the Museum relocated to 3750 Market Street. The Mission Inn Foundation continues to preserve the legacy of the Mission Inn and its founder, Frank Miller, through a variety of programs, including daily downtown tours, monthly public events, the Hands On History educational initiative, and the stewardship of its extensive collection of art, artifacts, and archival materials related to both the hotel and Riverside’s history.