What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

The grounds of this Jacobean estate contain one of the oldest mulberry trees in England.

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

A measuring mishap led to these artificial stone ladies losing their stomachs.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The anatomical-pathological collection of a man who changed surgery.

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

The resting place for anonymous victims of the Danube's dark waters.

More than a millennium's worth of municipal records preserve the political history of Austria.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

The solemn exterior conceals an opulent interior of this 17th century church.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

The Habsburgs' royal collections of art and wonders.

An exquisite Baroque church in Vienna's old town.