A once grand hotel is being retaken by the wilderness it once capitalized on.

One man's swirling six-acre monument of stone.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

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

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

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

100 massive sculptures in the Hudson River Valley.

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

This abandoned ironworks was once the most important military supplier in America.

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

This high-perched pachyderm marks the memory of not one, but two elephants gunned down in small New England towns.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

The poet's been ambling through these New York woods since 1940.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

This winding road through an Italian canyon may be the most scenic drive in the world.