The Arkadiko Bridge in Greece is over 3,300 years old and is still used by people today.

The bridge is located in the Argolis region of Greece. It was built during the Bronze Age by the Mycenaean civilization. The structure is 22 meters long and 5.6 meters wide. It stands 4 meters high.The builders used a style called cyclopean masonry. This involves fitting giant rocks together so tightly that their own weight keeps them stable. A small tunnel at the bottom allows water to pass through. This tunnel uses a corbel arch where stones are layered inward until they meet at the top.Archaeologists found pieces of old pottery in the soil to prove when the bridge was built. These ceramic shards date back to the Late Helladic III period. The bridge was part of a large road system connecting a fortress to a nearby port.Today the bridge is still strong enough for walkers and light vehicles. The dry-stone construction has survived thousands of years of weather and use. It remains one of the oldest bridges in the world that still works.