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

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

The largest ancient burial mound in Ohio.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

A cemetery housing wild west legends in South Dakota.

Just a man taking his prehistoric pet for a stroll.

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

Part of a secret 1970s nuclear defense program is now open to the public.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

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

The largest earthwork effigy in the world.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The remains of diamond fever taken over by the desert.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

An office built to look like a giant basket.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Sloth rehabilitation center in the jungle of Costa Rica.

The little bear in the "funny kind of hat" has made his way from London back to Peru.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

3/4-scale model of the White House in Atlanta, Georgia.