Rare recess caves fill this unbelievably beautiful Ohio park.

Legends surround this jagged rock formation in the New Mexico desert.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

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

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

This Old Testament garden features 100 plants from biblical times.

A tongue-in-cheek arcade where the games are based on everyday life.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

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

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

This little museum in the town where zombies were born celebrates the living dead.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Pennsylvania's own Roswell-style UFO mystery.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.