On my way on a rainy day to meet clients to look at property in Wine Country Temecula, I drove through Warner Springs. Saw this as I went by, did a u-turn to go back and check it out. Super cool old structure!
Built in 1830 apparently, this adobe structure has had some major settlement over the nearly 200 years. Check the retrofit buttresses on the backside holding up the severely leaning wall.
More information is available here.