Places stenaavel Wants to Go

One of Europe's oldest libraries.

Human-made caves excavated to hide a secret society of wealthy pagans.

Cliffs full of fossils at the portal to England's Jurassic Coast.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

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.

This foolish Victorian sea fort was converted to a deluxe hotel.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

A 200-year-old prison that now houses a peculiar crime museum.

Stonehenge has nothing on Castlerigg’s views.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

A house of bones — but nobody is quite sure to whom they belong.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

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

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

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

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

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