One of the two volcanic islands in the middle of Santorini Caldera. The water there has a temperature of about 33 Celcius and it contains sulfur that is good for the skin.

Fira

Fira is the capital of Santorini, Greece, and the most important of all villages. It is located at the west side of the island and 10 km away from the main port, Athinios. Fira has 1,600 permanent inhabitants. It is perched on the edge of an impressive cliff, at a height of 260 meters offering a great panoramic view over the submerged volcano.

For beautiful views of the caldera, descend the 300 steps from the northern city of Oia to the charming port of Amoudi Bay. Surrounded by striking red cliffs and dotted with white-washed buildings typical to Santorini, this little village features several quaint tavernas serving up the catch of the day. Aside from digging in the bounty of the sea, visitors can enjoy some swimming here, though the beach is rocky so you should bring appropriate footwear, especially if you plan on cliff diving (a popular activity in Amoudi Bay). On the small island of Saint Nicholas, seen from Amoudi Bay’s beach, visitors can climb up stairs from the water onto the small, rocky island and jump from a designated point.
Separating Kamari from Perissa on top of Mesa Vouna is Ancient Thira. This archaeological site, which was first claimed by the Dorians (ancient Greeks) in the 9th century B.C., is home to ruins from the Hellenistic (Greek empire built by Alexander the Great), Roman and Byzantine (eastern Roman empire) eras. Stroll through Ancient Thira and you’ll find ruins of ancient religious sites, a theater, old city administrative buildings and even a gym for military trainees.
Oia, pronounced Ea, is the most famous of all villages of Santorini. It is known throughout the world for its quiet life and fantastic sunset, and is certainly the most beautiful and picturesque village of Santorini. The village is also situated on top of an impressive cliff and offers a spectacular view over the volcano of Palia and Nea Kameni and the island of Thirassia. Oia is situated on the north of the island, 11 km away from Fira.