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

Louise Bourgeois' 30-foot-tall steel spider sculpture.

Dictionary Johnson’s favorite feline.

An unusual round church in London with a Templar past.

A hands-off space for graffiti artists to hone and display their skills.

19th century tunnels burrowed under Liverpool.

Pyramid shaped monument with a tall tale attached.

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

A beautiful and classically designed villa, with an hourly infestation of monsters.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Fighting the British and making game shows for over 150 years.