400-year-old garden, restored to beauty.

An incarceration museum on the spot of possibly the oldest prison in England.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

A cluttered and astounding collection of antiquities and curiosities.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

This series of Scottish caves has no clear purpose other than baffling historians.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Catacombs turned marketplace.

A mysterious artist-run cabinet of curiosities and library.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

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

Remnants of a Victorian garden feature sitting in public woodland.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Surreal riveted sea forts once protected the Kent shores from German attack.

This tangled English forest looks like something right out of a fairytale.

Hear the quietest sound from across the dome.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.