A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

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

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.

Abstract dinosaur models in London.

A unique waterfall that some believe attracts the fairfolk.

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

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

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

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

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

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

An incarceration museum on the spot of possibly the oldest prison in England.

Remnants of a Victorian garden feature sitting in public woodland.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A historic house left in "dramatic still life."

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

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The longest hedge maze in the world.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A kaleidoscopic warehouse-maze of handmade neon signs.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.