The river rapids known as the Rápidos de Bacalar lie between a town of the same name and Quintana Roo’s state capital, Chetumal. Here, crystal waters and infinite shades of blue attract happy travelers from all over the world. Chill over a delicious seafood meal at the on-site restaurant, rent a stand-up paddleboard, or kayak down the rapids. Nature-lovers must not miss the stromatolites, i.e., “living rocks,” that populate this diverse ecosystem. An early arrival is recommended for a day in paradise, replete with relaxation or activity, you decide. Don’t forget water shoes for exploring rocky shores. (A fifty-peso entry fee; parking available).