Megapodes incubate their eggs using the heat of an active volcano on this Pacific isle.

Life-size figures portray depot attendants, train crew, and passengers frozen in time at the oldest railroad station in Arkansas.

Harry Potter’s Hogsmeade Station is also a charming blast from the past situated in North Yorkshire.

With a crest near 10,000 feet, this treeless fault-block mountain in eastern Oregon provides stunning views and spectacular glacial landforms.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

The only freestanding table rock formation east of the Mississippi.

The chiseled jaw of this forgotten American hero still stands tall in a small Indiana town.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This roadside wonder is as mysterious as it is beloved.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

This picturesque abandoned home is rumored to be a spite house.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.

This large, circular tomb is the final resting place of the first emperor of Rome.

These massive concrete balls were used to mine gold in Virginia.

The deepest hole drilled in the name of science, where evidence of Precambrian life was found.

A swing to dangle you off the very edge.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The oldest residential street in Europe also features an optical illusion.

These little-known sands dunes are a geological anomaly in Saskatchewan's southern prairies.