The theatre stood at the western foot of Mount Cynthus, facing Rheneia, and not far from the stoa of Philip. Its extremities were supported by walls of white marble of the finest masonry, but of a singular form, having had two projections adjacent to the orchestra, by which means the lower seats were in this part prolonged beyond the semicircle, and thus afforded additional accommodation to spectators in the situation most desirable. The diameter, including only the projections, is . The marble seats have all been carried away, but many of the stones which formed their substruction remain.