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

A miniature world of concrete and stone in Springfield, Ohio.

One of the last few period-correct, hand-operated canal locks in the country.

The largest earthwork effigy in the world.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Deadly airliner crash preserved for those willing to climb and pay respects.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

The oldest continuously occupied public building in the United States.

A little slice of Florida face-in-a-hole kitsch, unexpectedly located in a small New Mexico town.

When life gave this firefighter a forest fire, he made a rough-hewn sculpture park using a chainsaw.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

Home of the International Space Hall of Fame.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

An unassuming 13-acre park is home to over 12,000 roses.

A single handprint, which, according to Ohio State University legend, cannot be scrubbed off.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.

Unique tower has outlasted a takeover of the company.

This huge clock made of flowers and simple machinery was once used a political weapon.

A former 19th-century tavern, famous for its peach brandy and honey concoction.

The world's longest known cave system.

A local scoured more than 1,000 acres for stone to create his masterpiece.