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

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

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

This landmark building is now a vibrant performing arts space with musical acts from around the world.

This Orthodox Church's exterior is rather unorthodox.

The real-life site of Ichabod Crane's infamous gourd attack.

100 massive sculptures in the Hudson River Valley.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

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

Visit the monolithic tomb of America's most famous general.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

One of only two commuter aerial tramways in the United States.

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

Sniff the Titan Arum's rotting flesh.

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

Dedicated to a legendary spiritual vision.

An abandoned military bunker that has been transformed into an artist's paradise.

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

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

Thomas Edison's home and final resting place also boasts an impressive garage, where some of the earliest electric cars are on display.

Take a step into the workshop where Edison and his employees revolutionized the world.