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

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

The anatomical-pathological collection of a man who changed surgery.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Semi-precious Blue John stones have been mined in this cavern system for centuries.

Budapest's Communist-era statues, banished to the suburbs.

Climb inside an iron crystal magnified 165 billion times its normal size.

A Museum of Psychiatry in a still-operating mental institution.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

Eyam took steps to quarantine themselves and keep the plague from spreading.

A marvel of Byzantine engineering under the streets of Istanbul.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The world's second-largest sundial, made entirely out of stone.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Medicinal spa created with the discharge from a geothermal energy plant.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

France's most famous cemetery, with some of its most curious tombs.

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.

The vast, legendary catacombs hold secrets much stranger than stacked bones.