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

Eighty million natural history specimens call this gargantuan museum home.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A hands-off space for graffiti artists to hone and display their skills.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A huge musical instrument played by the ocean.

This Georgian architectural masterpiece is the only cloth hall left in Britain.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

This haunting stone chasm is a hotbed of mossy rock and English legend.

This tiny little pool is said to be home to a malicious mermaid named Jenny Greenteeth.

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

The tradition of using flowers to decorate wells is once again thriving in England.

6000-year-old site covered in more than 50 megaliths.

The world's first successful water-powered cotton mill paved the way for the factories of the British Industrial Revolution.

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

Seat of the Duke and Duchess of Devonshire for centuries.

A popular day's outing in Bovington consists of watching military tank driving practice.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

A museum in south England celebrates the amphibious vehicles that cruise on a cushion of air.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.