This ecological park is the definition of impressive, a huge green space with jaw-dropping topographic diversity—enormous sea-facing cliffs, dense jungle interior, pristine golden shoreline and fish-teeming waters. All of that is punctuated by an extensive activity menu. Visitors to the park can choose from sailing, snorkeling and kayaking, horseback riding, zip lining and buggy rides. For kids, there's a petting zoo. But the most unique offering is Hoyo Azul, a cenote (limestone cave) with a crystalline pool where you can swim.