Experience a charming 1930s version of "infotainment."

An enormous illuminated figure dances on the Las Vegas strip.

Mysterious meeting place for UFO hunters near Area 51.

If you want to take a peek at Area 51, this is legally as close as you're going to get.

These markers are used to document elevation changes around the famed dam.

This sign designates the road that leads to the infamous Area 51.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

An eatery for UFO seekers on the Extraterrestrial Highway.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

The Pope’s secret escape route.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

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

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