This haunting monument honors the victims of 9/11.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

The rustic think-space of famed naturalist John Burroughs stands exactly as he left it.

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

This Pennsylvania structure, the oldest building in Gettysburg, was once a stop on the Underground Railroad.

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

A very classy 1920s-era bar right in Grand Central Station.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

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

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

This Central New York ghost town was once a prosperous railroad community.

Oldest existing wire suspension bridge in the United States.

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

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