According to the legend, this structure was built in a single night with the help of the devil.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

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

This ancient market is often referred to as the oldest shopping mall in the world.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This shallow cave got its name from copious amount of human bones found inside.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

A crumbling mountain resort that looks like it was abandoned in an instant.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Walk in the footsteps of the famed astronaut at Purdue University.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

The history of funerals and funerary customs.

A Roman-style column in Oregon hides a spiral staircase inside.

A massive sea stack famous for its appearance in The Goonies.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

This sandstone mansion was the home of two of Oregon's most important pioneers.