Irakleia is an island and a former community in the Cyclades, Greece. Since the 2011 local government reform it is part of the municipality Naxos and Lesser Cyclades, of which it is a municipal unit. Its population was officially 151 inhabitants at the 2001 census, and its land area 17.795 km². It is a small yet beautiful island between the islands of Naxos and Ios. In close proximity to Schoinoussa, Koufonisi, Donoussa, and Keros islands, together they form the Small Cyclades. The port is called Agios Georgios, while the "capital"/chora on the top of the island is called Panagia. The biggest caves in the Cyclades are located on Irakleia. Irakleia can be reached by big boats from Athens, Naxos and Paros.

Source: wikipedia.org