7 Ancient Technologies That Used Amazingly Advanced Science

3. Da Vinci's City Of The Future - Germ Theory

I think we can all agree that Leonardo Da Vinci was a pretty smart bloke, but he was still living in an age that predated a lot of modern science. He didn't let this stop him though, and developed a whole range of technologies that were way ahead of their time.

These included a city based around principles that wouldn't be formulated for another 400 years or so. Around the year 1400, Da Vinci was living in Milan whilst the bubonic plague tore its way through Europe. This was made worse by the fact that the cities were essentially overcrowded cesspits in which you spent most of your time with your face inches from somebody else's armpit.

At the time, people had no real idea how disease spread and the prevailing theory was that illness was caused by "bad air" and demons or whatever.

Leonardo's ideal city, however, had sanitation and cleanliness at the forefront of the design and utilised principles that we would later go on to develop into Germ Theory in the 1800s. The city was divided into separate levels, with the lowest levels reserved for canals that would whisk away any waste products, whilst the upper levels featured wide streets, allowing people to move around without literally breathing into each other's mouths.