Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Giant granite rocks standing end-to-end like a train of circus elephants.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

One person's lost luggage is another person's treasure.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

A toxic ghost town sitting atop a massive coal fire.

Mysterious 500-year-old tapestries depict a unicorn hunt.

100 massive sculptures in the Hudson River Valley.

A curious sculpture garden and museum in Cochrane, Wisconsin.

An oddly poignant roadside attraction celebrating American folklore.

One man's swirling six-acre monument of stone.

A fitting attraction for the corn capital of the world.

One man's quest to save his town with a trail of record-breaking sculptures.

Three legendary, living albino buffalo roaming their pastures for all to see.

A true roadside icon standing on the same plains that the herds once roamed.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A museum within a museum, devoted to history's most questionable medical devices.

Direct, creative challenge to Mother Nature's winter wrath.

14th century Norse artifacts in Northwestern Minnesota could have proved a Viking landing before Columbus.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

Small-town museum dedicated to outer space ... and bicycles.

Homemade outdoor church and sculpture garden decorated with glass shards.