The drawbridge used in the filming of the movie 'Annie' has been in the open position as it was in the movie for decades.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

This park contains a number of standing stones meant to heal and inspire.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

Oldest existing wire suspension bridge in the United States.

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

Designed by Calvert Vaux, this former post office now serves as a home for the local arts.

Once considered a marvel of engineering, this 107-mile canal played an integral role in building New York City.

On the Hudson resides one of the largest clocks in the world.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Whimsical artist house in the New Jersey woods.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A world-class collection of mechanical musical instruments and automata.

A trompe-l'oeil statue honoring the first guide dog in North America.

Local lore claims this park is named after a young woman who jumped off a cliff.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.