Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

The seat of Buffalo government is a gorgeous Art Deco palace.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Behold the rickety wooden glory of the world's oldest operating roller coaster.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

Once used to screen films for theater owners to rent, this historic building is now a start up hub.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Possibly the world's largest coin stands just outside of a Canadian science center.

Robots, lasers, and whoopee cushions, oh my!

Vikings and Evangelicals have both had a hand in this replica medieval church.

This freshwater spring fills with 10,000 gallons of water per minute.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

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

This striking art museum holds an amazing series of curiosity cabinets.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.