A musical instrument played by the sea.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Cozy basement bar sports an inventory of over 2,000 beers.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

A church filled with the bones of hundreds of virgins martyrs—or so they say.