This overlooked street light once served as a KGB dead letter box.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

Ship-sized kinetic sculptural fantasy.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A Roman spa buried deep beneath the City of London.

The cedar tree in Highgate Cemetery earned its title by accident.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

This home on a quiet suburban street is completely covered with vibrant mosaics.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

The monster at the center of the Darwin Center Spirit Collection.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Collection dedicated to brands, packaging and advertising.

A network of concealed passageways lies within a busy London Underground station.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Artists and musicians now rule over this former rail station.

A little slice of Japan and its aesthetics in London's Holland Park.

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

Abstract dinosaur models in London.

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

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

This 1920s Dutch barge is now a floating bookstore.