Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

A striking depiction of Teotihuacan's mysterious "Spider Woman."

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

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Shaped like a big top tent, this memorial honors the victims of a terrible train wreck.

Coca Cola may be "the real thing" but its inventor, buried at this Georgia gravesite, called it a "valuable brain tonic."

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

The final resting place of soldiers' loyal canine companions.

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

Largest lake in Great Britain measured by surface area.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

This Neolithic-era complex boasts standing stones, a cairn, and the only henge in Western Scotland.

An unusually shaped lighthouse with origins rooted in heartbreak.

This sculpture commemorates Edinburgh's sister city and their respective celebrity dogs.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

The colorful stairs are made with marble from the world's major quarries.

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

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