This Florida sinkhole hides a rainforest-like micro-environment in its depths.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

This historic folk museum celebrates the attention to detail that makes America great.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

This Russian museum stresses the importance of keeping clean and even holds one of Pavlov's dogs.

Beachcombers have been populating this museum with artifacts ranging from prehistoric to barely historic since the 1930's.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

The king of U.S. high points towers over every other peak on the continent.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

There has been an astronomical clock on this spot since the 14th century.

The remnants of an early American attempt at missile defense.