Between them is the small settlement of Agios Georgios (Saint George), which forms the island's only harbor and consists of a few hotels and restaurants.

The highest point on the island is 209 metres (686 feet) above sea level.

Ancient writers varied in recording its name: Tragia (Τραγία), Tragiae or Tragiai (Τραγίαι), Tragaeae or Tragaiai (Τραγαῖαι), and Tragaea or Tragaia (Τραγαία) are among the forms recorded.

[5] In modern times, the island (dependent on Patmos) was occupied in 1912 by the Kingdom of Italy during the Italo-Turkish war and, after being part of the Italian Islands of the Aegean (of which it was the northernmost islet),[2] was ceded from Italy to Greece in 1947 with the Treaty of Peace.

[6] In 2011, as part of the Kallikratis Plan, the island's status has been upgraded from Community to Municipality.