California has 21 old Spanish Missions. They were built between 1769 and 1804. One of the last ones to be built was Mission Santa Inez in Solvang, CA.
Each Mission was built a "day away" from a neighboring Mission, so folks could ride or walk "El Camino Real" with knowledge that rest and refuge was not far way. The 2 closest Missions to Santa Inez are Mission Santa Barbara to the south and Mission La Purisma Concepcion to the east. Nowadays, these 3 Missions can be visited in a day. All of the Missions were connected to the "hide and tallow" trade, using the Manila Galleon to transport goods from the New World to the Old World. Santa Inez has a fantastic fresco showing that trade route that is most interesting.

Stretch out the map and look at the a depiction of the known world in the 1700s. The Manila Galleon route is clearly marked in the Pacific Ocean. You can see the line of demarkation that separates Spanish lands from Portuguese lands in South America. This "line" was set by the Treaty of Tordesillas and sadly Portugal got the short end of the stick. The Treaty was signed in 1494 and the true geography of South America was not known at the time. As an aside, look at the top right of the map and you'll see "Las Rusias" and "Tierra del Gran Kan" (aka Russia and China). While these pieces of information don't have much to do with the Mission, it tells of the time the Missions were built. The world was in the hands of the Spanish, a very important nation at the time.
The founder of 9 of the Missions was Junipero Serra. I'm guessing he was a force to be reckoned with as he set the ball rolling in Alta California to expand Spanish domination of the World.
The adobe Mission is highly decorated with frescos. The very colorful interior has been restored to reflect the early 1800s design.
The long narrow church has a tile floor that shows the wear of the ages. You can almost "feel" the thousands of feet that walked these floors.
You don't have to be Catholic to enjoy the Mission and learn from the Mission. It's a slice of California history that tells a story of this state. Knowing the past helps define the future.