This was why 70 percent of leatherbacks that nest in Costa Rica do so on Playa Grande. It was why leatherback populations have dropped from more than 1,000 nesting mothers to only about 40 each year.

Waldorf Astoria Costa Rica Punta Cacique just opened in Guanacaste—and T+L was the first to check in. The hotel's multi-level cascading pools feature various in-water loungers and nooks to recline as ...