This bright-green lake was formed when the roof of a cave crumbled. Its mineral-rich water, a constant 22-29 degrees Celsius year-round, has healing properties. And you get a free spa treatment from the little fish that come to nibble at your dead skin. There’s a refined restaurant serving modern Greek cuisine, playground, good snorkelling, and aqua aerobics classes.
Travel time: 55 minutes from Syntagma.
Transport: Metro line 2 to “Elliniko”, 122 bus, stop “Limni”.
Cost: €16 on weekdays, €19 on weekends and holidays. Kids under 5: free. You can preebook your ticket or upgrade it during your visit for one of the special areas at Lake Vouliagmeni; Prive Area, Wooden Area, Double Day-Beds. Find out more about your options here.