Uyuni, in southwestern Bolivia, is best known as the gateway to the world’s largest salt flat, Salar de Uyuni. Once a humble railway town, Uyuni has grown into a base for travelers drawn to this surreal landscape, where an ancient dried-up lake has left behind a vast expanse of glistening salt crust.

Saudi Arabia is revealing chapters long unseen by tourists. Al-Ula is home to Hegra, the first UNESCO World Heritage Site in the kingdom and hosts to ancient Nabatean tombs carved in sandstone cliffs. Nearby, the mirrored Maraya Concert Hall reflects the desert sky, its design both unexpected and elegant amid the sands. Visitors can wander through narrow canyons, step inside rock-hewn facades, and feel the weight of ancient civilizations still echoing across the dunes.

Aarhus, Denmark's second-largest city, offers a captivating blend of historical charm and modern vibrancy. Founded in the 8th century, Aarhus boasts a rich history that visitors can explore at the Old Town Museum, an open-air museum that recreates Danish life through the ages with its historical buildings and interactive exhibits. The city's medieval roots are also visible in the well-preserved Aarhus Cathedral.

Niger, located in West Africa, is a country of vast landscapes and diverse cultures. Much of its territory is covered by the Sahara Desert, with rolling sand dunes, rocky plateaus, and oasis towns defining the northern regions.

Namibia, in southwestern Africa, is a land of dramatic landscapes and striking contrasts. From the towering sand dunes of the Namib Desert to the rugged mountains and deep canyons of Damaraland, the country offers some of the continent’s most unique scenery.