Vouliagmeni Lake

Located outside Athens, Lake Vouliagmeni is a thermal mineral lake surrounded by dramatic rock cliffs. The naturally warm waters are open year-round and feature resident Garra rufa doctor fish that nibble dead skin off swimmers.

Viewers shared mixed feelings about swimming with the doctor fish, with some finding the ticklish sensation fun while others disliked it or worried it might hurt. Many commenters drew comparisons to a fish spa or a famous scene from the show 'Victorious'.