One of America's first dinosaur parks gives a window into Depression-era paleontology.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

A fitting attraction for the corn capital of the world.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

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.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

Despite repeated attempts to make it work, this former mining town is now nothing but dust and memories.

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

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

The "lovely red Vega" of the legendary record-settling pilot.

Home to items never before seen by the public.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

There aren't too many operational funiculars around, but Pittsburgh has two!

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

A quirky collection of outsider art made from automobile parts.

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