The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

Every year locals give the bear a fresh coat of paint to preserve its signature goofy grin.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

Complete town of 5,000 living out at sea on the world's first offshore oil platform.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

What might be the largest completely Jewish town in the world outside of Israel now faces dwindling numbers and empty streets.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

Spring that emits water and fire at the same time is said to have remedial properties, and sparked its own religion.

Swirling layers of white and red rock earned these mountains their festive nickname.

Resonant stone, that has been played since prehistoric times.

This striking icon of the disputed Republic of Artsakh caused a stir at a Eurovision Song Contest.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

A subterranean display of public art and architecture.

An abandoned train station in Munich constructed for the 1972 Olympic games.

The control tower at the historic weapons range is now available as a highly unusual vacation rental.

A small square plaque marks a failed assassination attempt that could have changed history.

The scars of World War II are preserved on its walls.

A fearsome dragon clings to a corner of Munich's city hall.

Go surfing on this urban wave, "hacked" by local surfers.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.