A musical instrument played by the sea.

This Slovenian museum houses the country's largest collection of painted beehive panels.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

One of the best-preserved medieval streets in Europe.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

Eighty million natural history specimens call this gargantuan museum home.