5 longest walls on Earth ranked - and No. 2 is a fortress wall few people know

Ancient stone walls, built for power and security, vary dramatically in scale. While most served as city or military fortifications, the Great Wall of China dwarfs all others, stretching over 21,000 km. Modern measurement techniques, including satellite imagery, have revealed its true, immense length, highlighting its unparalleled status among global defensive structures.

By TOI World Desk