A short bus ride from the city of Salto, Arapey Thermal is a luxury (though not pricey) resort built around six mineral water pools fed by the Guarani aquifer, one of the largest ground-water reserves on Earth. At the restaurant, you can eat light but you don't have to; The spa offers hot-stone massages and more. Resort staff can get you on a horse, point you in the direction of the best hikes, and introduce you to the animals on the on-premises farm.
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