World’s Important Walls

WORLD’S IMPORTANT WALLS GREAT WALL OF CHINA In China.  The longest wall of the world.  Its length is about 2000 mile or 3219 km, and its height ranges from 6 to 1metre. HADRIAN’S WALL In U.K. 120 km, long wall built in 122 AD from ldBowness-en-solway to New Castle.