The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A floating McDonald's built for Expo '86 is now a derelict relic on Burrard Inlet.

This historic Victorian hotel has a scandalous history of affairs and murder.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

First flying reptile discovered in British Columbia was for years forgotten in a cabinet.

2300-year-old Roman road connecting the empire.

A Nesting Doll of Churches.

This curious, round temple is the oldest still-standing marble building in Rome.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

Breathtaking and huge 430 year old maps of Italy.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This demon atop the Notre-Dame de Paris looks utterly bored.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

An architectural oddity hides in plain sight on this iconic London bridge.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

The ritual has been performed uninterrupted for nearly 700 years.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.