This lake’s emerald green waters are a spectacular sight, but it’s not a great place for a swim.

A stockpile of childhood lunch pails turned collectibles.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

See massive fossils that are over 200 million years old in northeastern Arizona.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A small museum packed with specimens from important fossil sites and minerals from historical pegmatite quarries.

The largest salt lake in the Sahara is mysteriously alluring.

The enormous appendage offers spectacular views of Colombia's Huila Department.

The busy transport hub is home to the tallest airport slide in the world.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

This former lieutenant governor's home is brimming with curiosities.

The best Tiki bar in Las Vegas.

A new kind of theme park for adults off the Las Vegas Strip.

An otherworldly musical haven in The Big Easy.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

The most southern point you can drive to in the Western Hemisphere.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

Beneath the surface, something slithers. And if you find it, prepare to be slimed and glowing.

A remote lodge nestled among some of the world's best-preserved rainforests.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.