11San Alfonso del Mar (Algarrobo, Chile)

San Alfonso del Mar, a private resort in Algarrobo, Chile, is home to one of the most beautiful pools in the world with breathtaking clear blue waters.

Stretching nearly 1 mile and filled with 250 million liters of water, San Alfonso del Mar once held the Guinness record for the largest man-made crystal clear lagoon in the world.

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