Great Wall of China (China)

Great Wall of China, one of humanity's most awe-inspiring architectural marvels, is a UNESCO World Heritage Site stretching over 13,000 miles across northern China. Built over centuries (7th century BC – Ming Dynasty), it served as a military defense against invasions, with watchtowers and fortresses dotting its serpentine path. While often associated with Qin Shi Huang, most surviving sections date to the Ming era (1368–1644). Combining history, engineering, and breathtaking landscapes, it symbolizes China’s resilience and cultural legacy. Today, it attracts millions, offering hikes along rugged mountain ridges and a tangible connection to ancient ingenuity.