An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

New Orleans' famous cemetery, located on the site of a former race track.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

The longest navigable underground river in the United States is home to countless blind and albino animals.

An antiquated German apothecary on Chicago's North Side.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

European castle ruins in an American state park are actually the product of death and grief.

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

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

An abandoned relic of the city's failed experiment with below ground transit.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

Less a museum than a bizarre fantasy world created by artists and engineers.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.