I've been to a majority of the missions in California, but the san luis rey mission is my favorite. Its huge! There is a lot to see at the mission, and you could spend hours just wandering through the grounds. The mission itself is rather spectacular and is the largest mission (from what I can recall) in all of California. Its not in the middle of a busy city, so you really feel you're in the middle of "nowhere." I highly recommend this mission if you're doing a tour of California or a tour of the missions.
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