Ponte dei Sospiri (Bridge of Sighs), Venice

The only fully covered bridge in Venice. You can take a tour and see this in person, but I saw it from a gondola ride underneath it. Fascinating! Our gondola driver/guide told us about it. It was a bridge that use to lead to a prison. The last look out to the world for many of the prisoners was through the windows in this bridge. Then many would serve life sentences. Lots of history! It is by St marks Square area and Harry's Pub too.

It's one of those little architectural details that make you feel the place you're visiting. Opposite to it is the shore that faces the third venecian island, so not only the bridge is nice, but the whole context.