The term central-plan building (CB) describes an edifice -- either detached or integrated into an architectural ensemble - with main axes of equal or nearly equal lengths, so that none is dominant. The basic shapes of a CB are a circle, a square, or a regular polygon, sometimes with an additional projection to set off the entrance. According to this definition, the Greek tholos is a centralized building, as are various other examples of circular funerary architecture ( Tumulus; esp. the mausolea of Augustus and Hadrian in Rome with their influence on sub…