The only surviving prototype for Buckminster Fuller's house of the future.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A gas station has taken the place of the home of the 19th American President.

This historic train station has been converted to a locomotive themed hotel.

A bizarre roadside attraction and the first instance of miniature golf in the world.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

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

These pretty kitties killed and ate as many as 135 railway workers.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

Enormous lake at the bottom of a unique cave system.

The world's longest known cave system.

One of the few surviving "Wigwam"-themed motels.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This replica of the Greek structure is in the heart of Nashville.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

Advice-columnist's bell tower, paid for with pennies.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.