The Spanish brought architecture that applies for the Spanish missions along California. The shape by which all the missions are shaped as are called a quadrangle, which mean's all sides measure the same to form a square. The missions are made of adobe bricks. The Indian men mix the ingredients with their feet. Next they put the mix in a wooden mold to dry in the sun.
Most of the missions have arches. Some missions have walkways under them and doors to go to different rooms. The arches also help the mission to be a stronger structure. Some missions have 22 to 33 arches. Each mission either has a bell tower or a campaniario. A bell tower is normally tall and skinny while a campaniario is shorter, fatter and usually holds three or more bells. The bells were very important to the mission to tell the Indians what to do when. And so today the architecture is still with us and you can see it in many buildings and houses.