See more here..
Apart from its large size, the lagoon has another spectacular feature: its waters have the transparency and intense turquoise color of tropical seas. This has been made possible thanks to an advanced technology* developed by the company Crystal Lagoons, which is able to collect ocean water and keep it in perfect condition. But this is not all that it is there: during summer, the lagoon further maintains a pleasant temperature that borders 26ºC, nine degrees more than the nearby sea temperature. The success and exclusivity of this technology has enabled Crystal Lagoons to export its know-how to major international real-estate projects.
In this way, at San Alfonso an unbelievable goal is achieved: feeling the enjoyment of the Caribbean Sea right at the Chilean central coast.