Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

A long-abandoned provincial prison left to crumble in the frigid air of Ontario.

A forsaken wonder in the middle of the East Side neighborhood.

Ruins of a historic medical facility sits eerily by the water.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

Buffalo's abandoned concrete grain elevators are getting a second life.

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

The graffitied ruins stand hidden within the Pennsylvania woods.

An abandoned tuberculosis hospital moulders on into an uncertain future.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

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