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

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

A masterpiece of Art Deco architecture hidden in plain sight in West London.

London's Victorian Tower of Babel.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

It is against the law to obstruct the view from the top of this English burial mound.

Run by the same people as a subterranean art space, this pub does double-duty as a Cave of Wonders.

The Florence Nightingale Museum is home to the famous nurse's most treasured possession: her beloved pet owl.

This 500-meter-long memorial pays tribute to the hundreds of thousands of lives lost to COVID-19 in the UK.

A mysterious artist-run cabinet of curiosities and library.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

Charles Babbage's proto-computer, painstakingly brought to life.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

These stained-glass windows are all that remains of a building that was the target of one of the biggest explosions in London after World War II.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

This historic building displays the remains of a victim of the devastating 14th-century plague.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Drink wine handed out through a window as part of an age-old tradition.