A remarkably well preserved tower dating all the way back to the Iron Age.

During this Shetland Islands celebration, hundreds of torch-carrying "guizers" lead a procession to burn a viking longboat.

The ancient latrines of the Greeks, in all their public glory.

Roman ruins top white travertine terraces formed by ancient hot springs.

The Greek island's old British cemetery feels like a forgotten garden.

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

This abandoned Greek island was the last active leper colony in Europe.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Museum preserving torture methods from the past.

The heads of two giant mythological water horses honor Scotland's horselord past.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

A sweet symbol marks the place where torturous executions were once carried out.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Macabre astrological automaton clock dating to the late 1400s.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.