Known as the Queen of Missions, is both a State and National Historic Site. Founded 1720; church built between 1768-82. Entire mission compound has been restored, including outer wall with Indian dwellings, granary and workshops. Rebuilt flour mill outside north wall was originally constructed about 1790, first in Texas. Visitors are fascinated by rich facade of domed church, and by sculptured exterior of sacristy window known as the Rose Window, or Rosa's Window. In granary is model of mission as it looked in late 1700s.