Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

Started as a kitchen garden, now the second largest botanical garden in the world.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The final resting place for the remains of 143 Habsburg royalty.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Decrepit Victorian public lift is a white-knuckle ride.

Regency-era excess on the English Coast.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

This unassuming building produced some of the world's most famous bells.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

Where's a guy to go after a long, hard day at work?

It celebrates a very stinky task and salutes London's fatberg-vanquishing team.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

An architectural oddity hides in plain sight on this iconic London bridge.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

A recently restored Shoreditch landmark with ties to Jack the Ripper.