The bluer than blue waters in these natural Israeli caves are reached via the world's steepest cable car.

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

A homage to the King at the hotel where he revived his career.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

On the shores of Lake Garda, the ruins of a Roman villa that allegedly belonged to the poet Catullus.

A small island in Lake Garda that was used as a burial site, pirate hideout, and a monastery.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

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

Two stone columns flank the grand Venice square, but there were supposed to be three.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

100 year tradition of fist fights, marked by marble footsteps.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A brutalist gem towering over the heart of Milan.

The mark of the Devil's horns on a marble column in Milan.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.