The history of the mission goes back to 1790's and while current buildings date all the way through to 20th century, there is plenty on display and information to show you the development of the area over more than 200 years. Parking is free and adult entry $5. Allow 1-1.5 hours to undertake the self guided tour which is very well marked. One of the early stops is a small theatre room where an 18 minute film plays continuously and provides a good and informative introduction. The museum rooms were originally used as living quarters for missionaries and their guests and has a good historical collection.