Kalaureia ( grc, Καλαυρεία) or Calauria or Kalavria ( ell, Καλαυρία) is an island close to the coast of
Troezen
Troezen (; ancient Greek: Τροιζήν, modern Greek: Τροιζήνα ) is a small town and a former municipality in the northeastern Peloponnese, Greece, on the Argolid Peninsula. Since the 2011 local government reform it is part of the munic ...
in the
Peloponnesus
The Peloponnese (), Peloponnesus (; el, Πελοπόννησος, Pelopónnēsos,(), or Morea is a peninsula and geographic regions of Greece, geographic region in southern Greece. It is connected to the central part of the country by the Isthmu ...
of mainland
Greece
Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders wit ...
, part of the modern island-pair
Poros
Poros ( el, Πόρος) is a small Greek island-pair in the southern part of the Saronic Gulf, about south from the port of Piraeus and separated from the Peloponnese by a wide sea channel, with the town of Galatas on the mainland across the s ...
.
Strabo describes the coastwise journey along the
Hermionic Gulf:
:The gulf begins at the town of
Asine. Then come
Hermione and Troezen; and, as one sails along the coast, one comes also to the island of Calauria, which has a circuit of one hundred and thirty stadia and is separated from the mainland by a strait four
stadia wide.
Pre-classical asylum

On Calauria a
Doric temple
The Doric order was one of the three orders of ancient Greek and later Roman architecture; the other two canonical orders were the Ionic and the Corinthian. The Doric is most easily recognized by the simple circular capitals at the top of col ...
of
Poseidon
Poseidon (; grc-gre, Ποσειδῶν) was one of the Twelve Olympians in ancient Greek religion and myth, god of the sea, storms, earthquakes and horses.Burkert 1985pp. 136–139 In pre-Olympian Bronze Age Greece, he was venerated as a ch ...
was built in the ancient sanctuary, possibly around 520 BCE. The dimensions of the temple are 27.4 by 14.4 m. There are six columns on each short side and twelve on each long side.
There is strong evidence that the