Macabre astrological automaton clock dating to the late 1400s.

Mysterious meeting place for UFO hunters near Area 51.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Elvis's own personal tropical hideaway.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The drama of nature in full effect in this Nevada State Park.

An exotic wildlife habitat right off The Strip.

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

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Towering basalt columns, a creation of fire and ice.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

A dilapidated psychiatric facility on the outskirts of Milan where electroconvulsive therapy was developed and Napoleon once lived.

This half-finished "city of toys" was almost Italy's own Las Vegas.

A spiritual sanctuary in a natural cave.

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

Walk through a fairytale in Tuscany.

Da Vinci's equestrian statue, 500 years in the making.

Thousands of well-dressed mummies below a monastery.