These phallic stone spires once served as Tolkien's Paths of the Dead.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

New Zealand's only running funicular railway.

Is there such thing as too many fruit bats? Not anymore.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

The word 'wunderkammer' translates as 'wonder-chamber'. This Wunderkammer is both a museum and a retail store.

Occult books, tarot, oddities.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

A beautifully eclectic mix of architectural styles.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

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

A former imperial sea-fortress and Soviet prison.

Man-made mineral caves house massive bat colony.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

Historic slum of Tartu.

This wooden recreation of a 9th century lake village looks as though it was built yesterday (which it relatively was).

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

Flamboyant architecture from the turn of 20th century.