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

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

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

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

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.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A unique waterfall that some believe attracts the fairfolk.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

A fantastic castle rumored to be the birthplace of King Arthur.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.