The Arkadiko Bridge in Greece is the oldest surviving arch bridge still in use. It’s believed to have been built during the Greek Bronze Age, around 1300–1200 BC, meaning it has gone through a lot to make it to today.It acted as part of a military road system between the cities Tiryns and Epidauros back in Mycenaean times. It has a wider berth than a normal footbridge, with a road width of around 2.5 meters (8 ft). Historians believe that this additional width was designed so that the bridge could handle chariots. What makes it even more impressive is that it’s made purely from limestone boulders, using no binding agent between the stones to keep the bridge intact. That means the bridge has lasted over three millennia from Mycenaean masonry skills alone and has survived it all.
Scientific discoveries, achievements, and inventions are made all the time. Throughout the year, papers are published and patents are filed for any number of new ‘things’, but occasionally something truly incredible comes along. #seventhings