While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

These tiny cabins on a cableway have been carrying visitors at a Baltic resort down to the beach since 1912.

An extensive collection of some of the oldest grave markers in Lithuania.

A small part of Russia that does not touch any other part of Russia.

The loneliest plant in the world resides at the Durban Botanic Gardens...mostly.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Walk through Czech history in Prague's largest graveyard.

Countless grotesque faces stare out from this eerie Prague art wall.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

The oldest of the three remaining bridges in England with buildings on top of them.

Modern commuters still pass through this 2,000-year-old Roman archway.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

England’s ancient oak tree has such an impressive girth, people have been hosting parties within the hollow trunk for centuries.

A gardener saved a beloved clock face from destruction by building it into a wall outside his house.

This enormous spiral sculpture looks strangely out of place on the edge of a housing development.

This landmark Victorian folly rewards visitors with spectacular views over the Peak District.

This mysterious hilltop collection of Druid carvings isn't quite what it seems.