Local history on display in Indiana's first Carnegie Library.

The first declared National Monument in the United States.

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

One of Indiana's only natural sandstone arches is nestled between resort ruins and an old Boy Scouts camp.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

You thought Santa Claus didn't exist, but it turns out you were wrong.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

Symbolic attempt to overcome the issues of life.

The only freestanding table rock formation east of the Mississippi.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A Nesting Doll of Churches.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Toxic waste disaster that founded the Superfund program.

Eclectic architecture in the woods of New York.

This New York estate was designed to resemble a medieval Scottish castle.

An old dining hall now serves up ghost stories for lusty locals.

The park is home to the United States's only still-operating Dutch windmill.

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

The oldest continuously occupied public building in the United States.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

The highest point in South Carolina was once owned by an energy company that neglected it but now the state is taking it back.

Georgia's highest point was given its strange name thanks to a simple translation error.