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".

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

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

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

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A tongue-in-cheek arcade where the games are based on everyday life.

The world's largest collection of witchcraft regalia.

Banksy gives themself artistic license with this piece of London street art.

The sign at the garden gate reads: "These Plants Can Kill."

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Dive for drinks at Croatia's first and only underwater winery.

This military tunnel dates back to World War II and provides visitors with a little wartime adrenaline.

This Croatian computer club features such gaming relics as the infamous Virtual Boy and an 8-bit Pacman machine.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

A relic of Victorian grandeur hides beneath a busy South London road.

Remnants of a Victorian garden feature sitting in public woodland.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

Collection dedicated to brands, packaging and advertising.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.