Though Potala Palace is in Tibet, the journey from Shenzhen is absolutely worthwhile! As the highest-altitude palace in the world, this sacred site of Tibetan Buddhism is a gem among UNESCO World Heritage Sites. Standing beneath its iconic red-and-white walls, you'll feel the sacred aura spanning millennia. The golden-roofed halls and vibrant thangka paintings make every step feel like flipping through a living history book. Don't forget your oxygen canister—the 3,650-meter altitude will give you a literally heavenly experience!