This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

Glasgow’s piece of the patron saint of love.

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

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

The world's oldest surviving music hall was also once a freakshow.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

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

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

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The final resting place of soldiers' loyal canine companions.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

360° views of the city plus five floors of optical illusions and hands-on science.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The anatomical-pathological collection of a man who changed surgery.

The British monarchy's stamp collection is one of the most impressive in all of Europe revealing generations of royal nerdery.

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

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

This semi-secret storybook hedge maze is also the oldest garden in the city.