Standing at the site of the world’s first-known flushing toilet, this surely has to be one of the greatest inventions ever. It might surprise you to learn that this particular latrine, with sophisticated sewage system, was constructed around 3,500 years ago by an advanced civilisation called the Minoans, at Knossos on Crete . The city had 25,000 inhabitants at its peak and the royal palace had more than 1,500 rooms – yes you read that correctly. They had vaults that could store 300,000 tons of