Church Interior

 The Mission Church is a National Historic Landmark.

It measures 150 feet long, 35 feet wide and 29 feet high. All mission churches were long and narrow because in mission days they had no way of joining beams. Windows were built high for protection and to prevent the walls from collapsing under the weight of the adobe. Specially treated rawhide was used to cover the window openings.

In 1931 the building was restored to the specifications and appearance of the 1813 church. Original materials present in the building include the wooden beams over the doorways, the dark adobe tiles at the front of the church. These floor tiles were baked in underground kilns.