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

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

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

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

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A clock designed to run with perfect accuracy for 10,000 years.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

The largest of London's subterranean rivers and once a mad, bad center of London life.

Artists and musicians now rule over this former rail station.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

An artistic tribute to the famous singer, just around the corner from where he was born.

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

London's old-school healing garden.

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

London's smallest police station is barely the size of a phone booth.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Hear the quietest sound from across the dome.

The final resting place to 300 Victorian-era pets hides inside the city park.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Catacombs turned marketplace.

This 1920s Dutch barge is now a floating bookstore.