The world's largest rotating world.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Over fifty whirling pools left by the glacial age.

This roadside attraction attracts kids with dinosaurs before blindsiding them with geology.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

Old Danish castle immortalized in Shakespeare's Hamlet.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

The "Seinfeld" diner.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

It houses the remains of a 17th-century version of the Titanic.

It's not a typo, now say it five times fast!

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

A massive tribute to this small county's top agricultural product.

The site where Confederate president Jefferson Davis was defeated has been marked with a bust... that leaves that part out.

"We Seceded Where Others Failed."

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

This replica of the Greek structure is in the heart of Nashville.

This historic train station has been converted to a locomotive themed hotel.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The only diamond mine in the world where you can keep what you find.