The wonder of Cetona lies in the naturalness with which the stone of its buildings blends with the almost pictorial delicateness of the Tuscan landscape. Go up through the narrow stone-paved streets, called "coste",or enter inside the "citadel", the ancient cluster of buildings overlooking the Renaissance square, to understand the poetry of this place, described as a "joy of serene forms" by Piero Grassini, capable of evoking the lost ghosts of time, among medieval passions and naturalistic suggestions.