Architectureal fantasy quarter of Rome.

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

Haunting graffiti left by prisoners of the Spanish Inquisition.

A Nesting Doll of Churches.

Giant, pink stuffed rabbit on an Italian mountain.

A collection of objects supposedly singed by the hands of souls in purgatory.

A fairy tale castle in modern Rome.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

The final resting place of the poets Shelley and Keats.

2300-year-old Roman road connecting the empire.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

This half-ton piece of the Alps sits at the base of the CN Tower.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

The people murdered during a 17th-century Norwegian witch hunt have been honored with a pair of stark, modern installations.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Stockholm's last remaining paternoster elevator.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.