The legendary building that needed ghostly approval before being built.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

This early version of the guillotine was used to execute the man responsible for its construction.

A 18th century graveyard and its astonishing cortege of macabre iconography.

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

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

A century-old tradition has culminated in a small but singular collection of feline effigies.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

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

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

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

Hear the quietest sound from across the dome.

One part local history, 99 parts gruesome haunted house.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

An unusual round church in London with a Templar past.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

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

Public access to clean drinking water was an instant hit among the masses.