Nisyros is situated in the south-eastern Aegean Sea and belongs to the Dodecanese Islands. It has an area of 41.2 km2 and a maximum altitude of 698 meters. It is 8 miles away from Kos, 60 from Rhodes and 200 miles from Piraeus.
The vicinity of Nisyros includes islets Gyali, Agios Antonios, Strongili, Pachia Ammos, Pergousa and Kandeleoysa (Faros). Along with Methana, Milos and Santorini, it is numbered among our country’s active volcanoes.