Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

The last four extravagant street signs of London's historic banking street.

A network of concealed passageways lies within a busy London Underground station.

Pop culture has helped to keep this iconic British building from being destroyed.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

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

The final resting place to 300 Victorian-era pets hides inside the city park.

An incarceration museum on the spot of possibly the oldest prison in England.

A student driver's nightmare.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Statue of death tucked in the University of Medicine courtyard.

A mechanized clock where a man fights off a dragon, crab, and rooster.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Stockholm's deepest subway station is also a stunning ecological wonder.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

An ancient Viking runestone hidden in plain view in Stockholm's old town.