23 Strange Historic Facts About World’s Ancient Cities

Almost every home in the ancient city of Mohenjo-Daro from over 4000 years ago was equipped with a private bathing area with drains to take the dirty water out into a larger drain that emptied into a sewage drain.

The city-states of the ancient Maya were dominated by two cities, Tikal and Calakmul, who fought a series of conflicts through proxy states. Some experts have compared these conflicts to US-Soviet fighting by proxy during the Cold War.

The largest brick arch in the world, the 121-foot (37 m) tall Taq-i Kisra, is nearly 1,500 years old and it is the only surviving structure from the ancient city of Ctesiphon.