Hot Springs Palea Kameni

Palea Kameni is one of the volcanic islets formed by Santorini's eruptions, sitting inside the caldera alongside its larger neighbor Nea Kameni. At its foothills, sulfur-rich hot springs flow into the sea, and this is the main reason boats stop here during volcano tours.

There's no dock or built pool in the conventional sense — visitors typically jump or swim from an anchored boat to reach the warm, mineral-tinted water near the shore. The water is known locally for its sulfur content and is said to have therapeutic properties; some visitors describe it as a mud bath experience, since the seabed near the springs can be silty. The caldera cliffs and Santorini's white villages are visible from the water, which is part of the draw.

Access is almost always via organized boat trips, usually departing from the Old Port of Fira or Athinios port, often combined with a stop at Nea Kameni to hike the volcanic crater. Catamaran and yacht tours covering the same route sometimes add meals, drinks and hotel transfers for a more relaxed version of the same itinerary. There's no fixed schedule for the springs themselves since access depends entirely on the boat tour you book, though the site notes general availability on Sundays.

This isn't a developed spa facility — no changing rooms, showers, or staff on site — so expect an open-water, bring-your-own-towel kind of experience rather than a polished wellness venue.