This man-made mound monument was built out of soil from all across the Polish empire.

This Ukraine alleyway has become its own little island of forgotten things.

This street has over a half-dozen names, all at once.

The medieval woodcut-style artwork chronicles life in medieval London.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

A mud brick kasbah with a history of lavishness and traitorship.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

This once-derelict building is now one of the most beautiful bookstores in the world.

A muddy alien landscape that is home to rare species of exotic plants.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Fossils, railroads, and waterfalls!

Few other hotels can rival the grandeur of the Castle in the Rockies.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

Britain's oldest and biggest hole in the ground.

The largest greenhouse in the world is home to over one million types of plants.