The vast, legendary catacombs hold secrets much stranger than stacked bones.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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

An avant garde art museum at the University of Chicago.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

All of Chicago's wood-paved streets are long gone but two alleys remain.

A monument to the art of slicing people open.

There aren't too many operational funiculars around, but Pittsburgh has two!

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.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.