This Toilet is 5,000-Years-Old!

Ancient engineering is always surprising, but this takes the prize for the most unexpected discovery. Archaeologists in Mohenjo-daro, Pakistan, found these public washrooms from thousands of years ago, featuring eight stalls and even double storey designs. The genius is in the layout. Each door was built with an L shape to ensure total privacy. Even five millennia ago, people understood that using the bathroom should be a personal experience, even when everyone else is right next to you. It serves as a reminder that some human needs and preferences for privacy really haven't changed much at all.