Mount Cynthus (Κύνθος, Kýnthos) is located on the isle of Delos, part of the Greek Cyclades.
On its sides are many architectural fragments of white marble, and on its summit are the foundations and remains of a large building of the Ionic order.
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.
In a small valley which leads to the summit of Mount Cynthus, leaving the theatre on the left, many ruins of ancient houses are observable; and above them, in a level at the foot of the peak, there is a wall of white marble, which appears to have been the cell of a temple.
[2] As the nominal centre of the Cyclades archipelago, Mount Cynthus offers superb views of the innermost islands: Mykonos, Naxos, Paros, Syros, and Rheneia.