Giola Lagoon/Thassos-Greece The Giola is a beautiful natural lagoon, like a swimming pool carved into the rocks. The water is warmer than the sea, which makes it pleasant for swimming. The place is unknown and the access there is difficult.
he Philippines Travel Inspiration - Ardent Hot Spring on Camiguin Island, Philippines. The water, which comes from Mount Hibok-Hibok (a stratovolcano), is quite hot but comfortable enough at 40 degrees centigrade.