Built in 1893, Casa de Rosas was the first project by architect Sumner Hunt, who's also credited with the Bradbury Building, the Automobile Club of Southern California and many other classics. It's also housed many important tenants over the years: the Froebel Institute, one of the first kindergartens in LA; a WWII army barracks, LA's first mission catering to women, even the headquarters of L. Ron Hubbard's Dianetics Foundation.