Frank A. Miller (1857-1935) made adobe bricks for a small 12 room guest house which he opened in 1876. Over the years by successive building additions he fulfilled his dream by recreating this early California Mission style setting of a hotel.
With the backing of Southern Pacific Railroad magnate Henry E. Huntington, Mount Rubidoux was purchased by Frank Miller of the Mission Inn in 1906, in an attempt to beautify the mountain and to sell residential lots at its base, a road was built a…