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

Three hundred years of preserved Spanish colonial history in San Antonio.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Home of St. Urho, the fictional patron saint of Finland.

The only arched bridge made of stone on the entire Mississippi River.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

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

The world's largest Holstein cow.

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

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

17,400 lbs., 12 feet in diameter, and 29 years in the making.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

The first declared National Monument in the United States.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Community bookshelf of 25-foot-tall book spines.

A statue high in a hill that represents how Buffalo Bill got his name.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Come for the speed, leave in love with the desert.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

Massive still life just off the highway in Kansas.