The sinking bridge of Isthmia in Corinthia is a modern marvel located at the Corinth Canal. There are actually two sinking bridges on each side of the canal, one facing the Corinthian Gulf and the other the Saronic Gulf. The one at Isthmia is pretty cool to check out, with remnants of the old bridge nearby. It's a quick stop for a 15-minute visit, perfect for snapping some pics and soaking in the engineering awesomeness.