A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

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

This 1920s Dutch barge is now a floating bookstore.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

A mysterious artist-run cabinet of curiosities and library.

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

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

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

This simple apartment may have inspired some of the most important theories in the history of science.

The steepest classic funicular in the world glides along a dizzying incline.

One of the largest mines in Bulgaria is now home to a vast museum more than 100 feet underground.

The social hall of this former factory is a Communist-era time capsule.

Rock carving created 1,300 years ago 75 feet off the ground.

An abandoned saucer-shaped monument in the Bulgarian mountains.

The excellent Swiss museum of witchcraft is led by a modern witch.

The immortal Hollywood star rests in peace in an unassuming Swiss village cemetery.

150-year-old satirical tableaus made from stuffed frogs.

A Swiss board game museum housed inside a picture-perfect castle.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

An unassuming Swiss institution houses Europe's largest toy museum.

One of the world's largest collections of pharmaceutical artifacts.

A charming little museum founded by the designer of the Statue of Liberty.