Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

The world's last remaining store of its kind.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

The unique circular corral belonging to the “Cattle King” of Oregon.

During its heyday, 72 one-ton buckets from this dredge bore into the Powder River excavating vast gold deposits.

A bronze replica of half-consumed salt lick honors a quirky town tradition.

An obscure waterfall that looks like something out of a fantasy novel.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

Possibly the smallest church in the world floats in the middle of a pond.

The shared home of a utopian commune that practiced "free love" a century before the hippies.

Central New York's first aquaponic farm (Closed).

A 10-foot-tall concrete Alley Oop statue left over from World War II now stands on the side of the road.

An interesting look into 18th-century American history.

A historic recreation of the golden age of the Erie Canal, abandoned for some time, slowly being restored.

Carved, egg-shaped stone with no explanation.

One of the earliest—and most commonly forgotten—acts of rebellion against English rule.

A recreated sign from the movie Jumanji has become a makeshift tribute to the film's late star.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

The remains of what was once the world's steepest passenger funicular.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

The largest known open fault in the United States is basically a giant natural refrigerator.

The oldest continuously inhabited street in America.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.