The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

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

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

The wooden airship was the largest flying boat ever built.

Home of Howard Hughes' Spruce Goose.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

These memorials built by an eccentric bachelor on the side of Interstate 5 cause both wonder and traffic accidents.

The longest and widest floating bridge in the world.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

An ice cream parlor chain that caters to vegans and pinball fans equally.

This former coal gasification plant found a curious second life as a popular public park.

Make your reservation to have coffee with some kitties.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A museum dedicated to the history and exploration of both popular music and science fiction.

A heavenly experience, right here on Terra Firma.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.