Established in 1876.

In the late 1800's wealthy easterners and Europeans flocked to Riverside in search of a warmer winter climate along with the desire to invest in the area's profitable citrus industry. Frank Miller, the Master of the Inn, successfully ran the from its early stages as an adobe boarding house in 1876 into the destination hotel it became until his death in 1935. His family managed the hotel until the mid-1950s, when it changed hands multiple times and risked demolition until Duane and Kelly Roberts purchased the iconic property and reopened in 1992. Kelly Roberts became Vice Chairman and COO to maintain Mission Inns reputation as a premier luxury California destination, and developed the Festival of Lights, Kellys Spa and more.