A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

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

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

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.

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

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

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

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

A modern English garden of eccentric beasts, follies, and oddities.

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

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

A unique waterfall that some believe attracts the fairfolk.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

400-year-old garden, restored to beauty.

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

The largest of London's subterranean rivers and once a mad, bad center of London life.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

This tangled English forest looks like something right out of a fairytale.

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

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.