This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A rare example of World War I trenches from the British front.

Macabre astrological automaton clock dating to the late 1400s.

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

Famously misunderstood wonder of the ancient world

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A reportedly haunted 14th-century church is curiously facing the “wrong direction.”

A unique tribute to the millions of animals who served and died for the British military.

Black cat statues guard this temple-like Egyptian revival factory.

An artistic tribute to the famous singer, just around the corner from where he was born.

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

One part local history, 99 parts gruesome haunted house.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The bullet-banged DIY suit of armour belonging to Australia’s most famous outlaw.

Once housing children next to hardened criminals this historic jail once displayed Ned Kelly's skull until it was stolen.

Cat art as far as the eye can see.