A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

An eclectic collection of highly specialized bicycles once used by artisans for their specific needs.

Six paintings reminding you that death is integral part of everyday life.

A Milanese café entirely designed by the American director Wes Anderson.

A once-fairy tale mansion now stands in a state of disrepair.

A wonderfully preserved example of London's 1960s-style high-density, low-rise public housing.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

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

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

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

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

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

Pop culture has helped to keep this iconic British building from being destroyed.

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

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

This 1920s Dutch barge is now a floating bookstore.

Catacombs turned marketplace.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

One part local history, 99 parts gruesome haunted house.

This amazing ancient cave was kept secret for seven years to protect it from the public.

This observatory within Europe's first dark sky park offers stunning views of the night sky.