Gothic Architecture began in the early 12th century C.E., and lasted in some places as late as the 16th. Although occasionally used in secular building projects, it was usually used in the service of the Christian church. The main difference between this and earlier architectural styles was in the development of the ribbed arch. Since this arch could support more weight, it allowed cathedrals to have thinner walls, which in turn meant larger interiors, stained glass windows, and a wider variety of exterior designs. With the new high ceilings and beautiful colored sunlight streaming in (along with the wondrous artwork of the Renaissance masters), a simple Christian peasant could truly believe that he was in the presence of his god.