After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

A tiny museum in Esperance, Australia, displays a bunch of space debris from NASA’s Skylab.

Australian museum dedicated to human health and lack thereof.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

The unique ecosystem atop an Australian mountain is home to some colorful inhabitants.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A massive underwater sinkhole made famous by Jacques Cousteau.

This small primate research island is teeming with playing, fighting wild monkeys.

A mysterious ancient network of thousands of perfectly straight lines stretching across miles of Bolivian desert.

White llama terraces dazzle in Peru's "other Machu Picchu."

This everlasting lightning storm may be the world's largest generator of ozone.

Hundreds of mummies in a silent room, some with eerily pained expressions preserved on their faces.

An ancient city hidden in the heart of the Sierra Nevada mountains.

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

The remains of an ancient settlement in one of the oldest archeological sites in South America.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

Former drug lord’s manor, now a theme park. Watch out for the hippos.

This picturesque mansion has gone from opulent ruin to nature museum.

No one knows for sure why this town's dead refuse to rot.