An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

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

A local prank turned town icon.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

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

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

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

See massive fossils that are over 200 million years old in northeastern Arizona.

There are eight natural springs around town, each with a slightly different taste.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.