Legends surround an ancient tree trunk riddled with nails for good luck.

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

Baroque celebration of the end of the Great Plague of Vienna.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

An ode to the washerwomen who called Pavia home.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A fantastic castle rumored to be the birthplace of King Arthur.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The secret medieval communication system will whisk your words above the noise of the crowd.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

An unusual round church in London with a Templar past.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

Pilgrimage site for star-crossed lovers.

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

This South London cemetery holds the remains of more than 15,000 people.