This coffee shop lies hidden beneath a historic church.

A faded reminder of what was once a common sight in London during the Blitz.

A lasting remnant of The Blitz.

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

The curios of pharmacist and collector Henry Wellcome.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

This five-star hotel was originally a swanky parking garage.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

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

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

A hidden sculpture garden tucked within the middle of Brighton.

The television series' iconic giant foot was borrowed from this classical painting.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Poet William Blake penned some of his most famous work during his brief stay at this beloved country cottage.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.