This unusual 7th-century Frankish seal offers more questions than answers about its past.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Repository for more than 22 million pickled specimens.

Eighty million natural history specimens call this gargantuan museum home.

The curios of pharmacist and collector Henry Wellcome.

Catacombs turned marketplace.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

The cedar tree in Highgate Cemetery earned its title by accident.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

One of Europe's oldest libraries.

Used as an example in one of the first dictionary entries for "museum" in 1706.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Home to the most complete dodo remains known - one head, and one foot.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

A working farm turned into a museum dedicated to the world's most unbelievably tiny cars.

This jewel of an engine is one of Northern England's finest surviving legacies of the Industrial Revolution, even catching the eye of Henry Ford.

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

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.