Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The ritual has been performed uninterrupted for nearly 700 years.

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

This volcanic plug boasts the longest recorded history of any Scottish stronghold.

The ornate structure is part of a building boasting more marble than the Vatican.

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

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

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

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

This two-legged horse statue celebrates a beloved cartoonist and his quirky characters.

This hidden gem reveals the history of Britain's first police force.

A striking glass tribute to two sisters who suffered during Scotland's "Killing Time."

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The largest permanent Monopoly board makes one of the longest games even bigger.

This single-track road rewards brave drivers with stunning Scottish scenery.