When he desired the simpler kind of beauty he set his figures in lovely landscape scenery with hills and trees and winding streams; when he was bent on grander effects, he added architectural settings. For the architects of that day were erecting noble buildings with columns and arches, vaulted roofs and domes; partly in imitation of the remains of Roman architecture, but also designed in a fresh spirit of invention to fit the new purposes for which the buildings were required. Thus arose that vast temple of the Roman Church, St. Peter’s. It is what is called a classic building; because its style is in many respects like that of the old classic Roman temples, which in their turn had represented a new use of the still older classic style of Greek architecture.