One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A naturally mummified 2,000-year-old man.

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

A network of concealed passageways lies within a busy London Underground station.

Museum about life, death, and cannibalism in the Stone Age.

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.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

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

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

A little slice of Japan and its aesthetics in London's Holland Park.

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

Abstract dinosaur models in London.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

This hidden green space is the city's second largest conservatory.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

Repository for more than 22 million pickled specimens.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

One of the world's largest collections of pathological specimens.

This 1920s Dutch barge is now a floating bookstore.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

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

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