Fantastically decorated underground chambers built in the 1760s.

A Roman spa buried deep beneath the City of London.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

This secluded walkway overlooks a magnificently wild London green space.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

A open air theatre built on a cliff by an eccentric British woman.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

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

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

This crumbling folly looks like an enchanted left over from Middle Earth.

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

Eclectic final resting place of the controversial explorer.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Fascinating town where normal life interfaces with the occult.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.