Santa Ysabel Asistencia, Mission museum in Santa Ysabel, United States

Santa Ysabel Asistencia is a sub-mission founded on September 20, 1818, in the mountains east of San Diego near the village of Elcuanan. By 1821 the site held a chapel, granary, several adobe houses and a cemetery. The original structures are gone; a Mission Revival chapel was built in 1924 on the site of the former adobe.

The outpost was founded in 1818 as a secondary location connected to a major mission and served under Spanish religious authority until Mexico's independence changed colonial rule. This period marked the expansion of religious missions into mountain territories.

The asistencia served about 450 Luiseño and Diegueño neophytes, and historical records note a higher-than-average conversion rate than at other California missions. The name comes from the Cañada de Santa Ysabel, near the village of Elcuanan. The 1924 Mission Revival chapel stands on the site of the earlier adobe.

The site often operates without full-time staff, allowing visitors to explore the church and collections at their own pace through self-guided visits. Check ahead to confirm access, as hours may be limited and the location is quite remote.

Two bells cast in 1723 and 1767, the oldest in Alta California, were bought from Mission Loreto in 1846 for six burro loads of grain. They vanished in 1926; only their clappers surfaced, returned in 1959, and a fragment of one bell was found in 1966.