Fortified homes of highland warriors that are still in use today.

These Stalin-era industrial 'death traps' hang lifeless above the city

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

A war-torn Olympic relic is being overtaken by graffiti and nature.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Ship-sized kinetic sculptural fantasy.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This one has sailed five times as far as Sir Francis Drake's famous ship.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

100 year tradition of fist fights, marked by marble footsteps.

Go inside to really appreciate this 500-year-old technological masterpiece.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

After 11 years of reconstruction work, Slovakia's finest hilltop chapel complex is finally reopen to the public.

One of the world's oldest olive trees, thought to be over 2,000 years old.

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

A curious cave church carved into the face of a cliff.