The Zheng brothers had stumbled onto the most Icelandic of experiences. With more than 600 natural hot springs, the volcanic island gets the better part of its heat and energy from geothermal sources. Of course, visitors like a good soak as well, a predilection that has helped make the milky turquoise waters of the Blue Lagoon, near the Keflavik airport, Iceland’s most popular tourist attraction. Luckily, there are numerous other outdoor geothermal pools in the neighborhood. All of these are within an hour or so by car from Reykjavik, and each has its own personality.

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Persons: Lucas Zheng, Zheng Locations: Boston, Venice, Keflavik, Reykjavik