Hidden in the northern region of Costa Rica, the Celeste River (Río Celeste) winds through Tenorio Volcano National Park with a color so vivid it seems unreal. The river’s striking turquoise hue is caused by a natural chemical reaction between two mineral-rich streams, Quebrada Agria and Río Buena Vista, which merge at a point known as "El Teñidero." This one-of-a-kind phenomenon creates the illusion that the water has been dyed blue, even though no pigments are present.

Mâcon is a riverside town in the Saône et Loire department of southern Burgundy, set where the Saône River curves gently through the countryside. Walking through the town naturally leads visitors from the riverfront toward its historic streets, where the past seems to linger in every corner. In the heart of Mâcon’s historic district, pedestrians find streets lined with notable sites.

Doubtful Fjord (Doubtful Sound) is a large fjord in southwestern New Zealand, in the same region as the smaller but better known Milford Sound. It is home to an unusually large population of bottlenose dolphins, as well as a variety of birds, fur seals, penguins, and often even humpback whales.

Karpathos is marked by the peculiar Karpathian houses, built of carved stone, full of embroidery and characteristic interior decorations. From Pigadia you may visit Kyra Panagia, a picturesque bay with a marvelous beach and a monastery of the same name. A little further, on the northern promontory of Karpathos, lies the Diafani village; on the nearby little island of Saria we see Palatia, with ruins of the ancient city of Nisyros.

Querétaro, located in the heart of central Mexico, is a city where centuries of history are still visible in daily life. Its historic center, a UNESCO World Heritage Site, features narrow streets, elegant plazas, and baroque churches that reflect its colonial past. One of the city’s most iconic landmarks is the massive aqueduct, built in the 18th century with 74 stone arches stretching nearly a mile across the landscape.