Hidden Global Cities That Are Under the Radar but Full of Character

21. Madain Salih, Saudi Arabia – The “Petra of Arabia”

Hidden in the vast deserts of Saudi Arabia, Madain Salih (Al-Hijr) is an ancient Nabataean city that rivals the beauty of Petra, yet remains largely undiscovered by mass tourism. This UNESCO World Heritage Site features over 100 rock-carved tombs, stunningly preserved and etched into towering sandstone cliffs. The intricate carvings and monumental facades date back over 2,000 years, offering a glimpse into the same civilization that built Petra, but in an even more isolated and mystical setting. Beyond the tombs, the region’s landscape is just as mesmerizing—otherworldly rock formations, sweeping sand dunes, and natural canyons make it feel like an ancient kingdom frozen in time. Nearby, visitors can explore the dramatic Elephant Rock, a massive sandstone monolith shaped like a giant elephant, and experience stargazing in some of the darkest, clearest skies on Earth. Thanks to Saudi Arabia's recent push to open up tourism, Madain Salih is now more accessible than ever—but it still retains an air of mystery and exclusivity that makes it a must-visit for those craving ancient history and adventure in an unspoiled desert landscape. Best time to visit: October–April, when the desert climate is cooler and more comfortable for exploring.