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.

Vanuatu, a chain of 83 islands in the South Pacific, offers travelers an experience that’s both bold and deeply rooted in custom. Once known as the New Hebrides, Vanuatu blends ancient Melanesian traditions with dramatic landscapes shaped by volcanic activity. On Tanna Island, visitors can stand at the rim of Mount Yasur, one of the world’s most accessible active volcanoes, and watch fiery eruptions light up the night sky.

Travelers on the Arabian Sea often find themselves in Muscat, on the Gulf of Oman. This port capital is situated between ocean and mountains, and boasts lovely beaches, great diving sites (watch for turtles!), 16th-century forts, and the impressive Sultan Qaboos Grand Mosque, which can hold 20,000 people.

Mikumi National Park, located in Tanzania's southern highlands, offers a pristine and relatively undiscovered safari experience. Spanning over 3,230 square kilometers, Mikumi is part of the larger Selous Ecosystem, providing a diverse range of habitats from open grasslands to dense miombo woodlands. This park is an excellent choice for those seeking a more tranquil alternative to the more frequented Serengeti and Ngorongoro Crater.

León, Nicaragua serves as the country’s capital for more than two centuries and still feels like the intellectual and political heart of Nicaragua. The city is known for its revolutionary past, visible in murals that stretch across building walls, telling stories of resistance, poets, and everyday citizens. The Cathedral of León, the largest in Central America and a UNESCO World Heritage Site, dominates the central square.