Polirinia is the site of remains from the sixth century B.C., Hellenistic, Roman, Byzantine, and Venetian eras. It was a powerful city, built on the natural fortifications of the rock at the top of the mountain. One of its harbours was at Falasarna, the other was Kastelli (Kissamos). The remains that are visible now are mostly from the second Byzantine and the Venetian periods. A particularly interesting set of remains is in the Archaeological Museum of Agios Nikolaos; the unique exhibit of an athlete's skull with a gold leaf crown found in a 1 A.D. cemetery near Agios Nikolaos and a coin from Polirinia in his mouth. As you walk up from the base of the hill you will see holes or caves carved in the rock, they are graves from the Roman period. Cisterns carved in rock are visible on the top.