A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

See just what life was like in a 19th-century prospecting town.

This elaborate towering structure was once famed for its revolutionary height.

One street divides a single town that stands in two U.S. states.

The largest wooden building in the world now houses a fascinating collection of aircraft.

Like Stonehenge, but with boats and oodles more charm.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.

This massive roadside mascot was the first version of the giant to illustrate his butt.

Three legendary, living albino buffalo roaming their pastures for all to see.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

There must be a pun in this haystack somewhere...

This erect, phallic geological spire wasn't always named so domestically.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

This sandstone mansion was the home of two of Oregon's most important pioneers.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.