This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

The world's longest known cave system.

Indiana's oldest sternwheel paddleboat has been plying the placid waters of Webster Lake for 90 years.

A fitting attraction for the corn capital of the world.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

Megachurch turned Catholic church comprised of 10,000 glass panes.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

In Grand Rapids, Michigan, a marker honors the creation story of a proud fictional culture.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

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

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

A real flying saucer, contracted by the U.S. Air Force.

This colonial cabin is the oldest building in High Point, built by one of the first settlers in the area.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

This shop is named for a runaway elephant who smashed through its doors, stole some peanuts, and spent five days on the lam.