Cemetery dating back to 1884, known for being the final resting place of the notorious Kray twins.

England's “third-oldest college” has not graduated a single student in over 400 years.

A forgotten underground railway once whooshed trams beneath London.

The (fictional) address of Sweeney Todd's bloody barbershop.

The ground on which Shakespeare’s initial playhouse once stood.

The world’s second-largest flood defense barrier has protected London for decades.

One of the most haunted places in London...or is it?

This cul-de-sac off Fleet Street is said to be the place where the infamous Demon Barber made a killing

The purported midpoint in London from which all distances are measured has a tragic love story at its core

A lone medieval church tower marooned among the City of London's skyscrapers

At Bank station, the tunneling shield that built the original Waterloo & City line tunnel is hiding in plain sight

The Underground railway station and its Cubist/Art Deco statue are so evocative of 1920s/30s London that one almost expects to see Poirot on the stairs.

Dedicated to a young woman who broke gender barriers at the University of Madrid.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

The remains of a convent turned military barrack in the heart of Madrid.

An ancient Egyptian temple in the middle of Madrid, Spain.

This modernist bridge highlights the bear as a symbol of Madrid.

King Carlos IV laid the first stone during construction of this chapel.

Likely the most colorful in the metro network, this mosaic was installed back in 1995.

This phone booth was recreated to honor "La cabina," considered the best horror film in the history of Spanish television.

A comprehensive look at the art of Joaquín Sorolla in his former home in Madrid.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

This open-air sculpture museum is located under a bridge in the center of Madrid.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.