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

Rebuilt remains of a temple to Roman god Mithras.

The ritual has been performed uninterrupted for nearly 700 years.

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

In the summer, the area around this sculpture transforms into a vibrant concert venue.

A surrealist timepiece by the artist of melting clocks.

A museum marks and documents the site of the Titanic's launch.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

This bridge was constructed from the rubble of the infamous Bastille.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

The celebrated eyesore created by starry-eyed sweethearts.

Historic medieval fortified city in southwest France.

Former bridge turned into an observation tower.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

This ancient Spanish castle sits high upon a hilltop.

Stunning Roman aqueduct used for 1900 years and still standing.

Commonly acknowledged as the only public monument to the Devil himself.

Ozymandias’ time-keeping temple.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The world's only museum devoted to the wonders of fluorescence.

A preserved college lock-up that recalls a clubhouse approach to discipline.