The walls, which are six feet thick, consist of irregular sandstone blocks, and are further strengthened by solid stone buttresses measuring nine by nine feet.

The towers to a height of thirty feet are a solid mass of stone and cement twenty feet square.

A narrow passage leads through one of these to the top, where the old bells still call the faithful to service as of yore.

Doubtless the Santa Barbara Mission church is the most solid structure of its kind in California.

It is 165 feet long, forty feet wide and thirty feet high on the outside.