Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

The middle finger of modernity.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Geothermal waterfalls in Tuscany.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This massive redwood tree has a hole in the base big enough to drive through.

A trash dump made beautiful by nature's power.

A hotel and restaurant serving as the mecca of kitsch.

French prisoners carved these boats from the bones of their meat rations.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A collection of pianos and more guaranteed to delight anyone interested in music history.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

An extensive collection of ancient Egyptian artifacts and mummies.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

This elaborate Hindu temple is located in a Chicago suburb, but looks like it was transported directly from India.

A meow-velous tribute to a beloved street cat, made famous on the internet.