This once luxurious Catskills resort is now a haunting ruin.

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

Reforestation in action is the main attraction in this abandoned quarry.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

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

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

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

This abandoned factory on the Hudson River once churned out a million bricks a week.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

This sound-art installation features songs composed using only the Mid-Hudson Bridge as an instrument.

This once sprawling resort now sits abandoned, filled with graffiti and vibrant colors from an era long passed.

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

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.

Original factory of John G. Borden who started what we know today known as Borden Dairy.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.