Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

Paths are maintained, but trees have taken over plots.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

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

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

These boots are made for selfies.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The largest retailer of seashells in the world.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

A very big rock just plopped down in the New England woods.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

The fading, forgotten remains of a once bright and booming factory.

Elvis's own personal tropical hideaway.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

A haunting tribute to pioneering photographer Clover Adams.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.