A wunderkammer of gold and silver reliquaries and ancient saintly bones.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Gargoyle head that brings good luck.

An ethereal glowing blue ocean cave in Croatia.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

Where the lovelorn find a home for their sentimental keepsakes.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Museum devoted to the artificial language of Esperanto.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

One of the best collections of wax anatomical models in the world.

This former insane asylum now holds a pathological anatomy museum.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.