Arkadiko Bridge in Municipality of Epidaurus

You're standing at the Arkadiko Bridge, also known as the Kazarma Bridge. It sits right beside the modern road from Tiryns to Epidauros, in Argolis on the Peloponnese. It might look like a modest pile of stones, but take a second look. This is the oldest surviving bridge in Europe, and one of the oldest arch bridges in the world you can still walk across.