Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Native Americans built this circle of stones, which was used to predict astronomical events.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."

Always a new use for this old building.

A library of only unpublished manuscripts.

A piece of Seattle’s historic Chinatown preserved inside a modern museum.

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

A large circus museum with summer performances.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

A hidden architectural treasure in New York's Brooklyn.

The best B-movies filmed on a shoestring budget were born here.

First a root beer ad, then a golf course clubhouse, and finally a massive teapot.

Thousands of jack o'lanterns light up Halloween at this historic West Virginia home.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This pebble beach is so beautiful that taking its rocks is against the law.