A ceramic postbox where visitors can post original poems and creative messages.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

Remnants of a Victorian garden feature sitting in public woodland.

Since ancient times these picturesque springs have been providing bathers with healing waters.

A mysterious stele of unknown origin sits on the peak of this curious mountain.

Dynamite factory turned museum explores the history of explosives.

This otherworldly French waterfall looks like its waters have turned to stone.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

This unique Renaissance castle was turned into a home for Nazi occultism.

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

Ride the subways of yesteryear.

The lasting remains of the Balloon Section of the British Armed Forces.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

An ancient knight and a symbol of the city's freedom.

This huge metal monument is slowly being stripped to its concrete skeleton.

Humble beginnings for one of the world's most famous scientists.

The remains of a sunken military ship wreck visible through clear water.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

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

A wonderfully strange collection of 500+ stuffed frogs doing people things.

Where the lovelorn find a home for their sentimental keepsakes.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

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