Don't get it twisted: This is the oldest pretzel bakery in the United States.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

A monument to the Mohawk people stands along an old Native American trade route.

Lake Champlain Bridge, the recently demolished and rebuilt bridge where they filmed "What Lies Beneath".

All that remains of the once-booming chain is a single orange-roofed restaurant.

The lost town of Neversink, sunk by New York City.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

This statue honors the author's groundbreaking family story.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

The land is home to swimming ponies and a legendary 18th-century treasure.

World War II bunker still standing on the New Jersey beach.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

Step inside Lucy, the world's largest "elephant."

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

A winding, cliffside stretch of road overlooking the Delaware River.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

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

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.