A hot dog stand where the heads are just as hot as the dogs.

A historic presidential getaway on the continental United States' southernmost island.

The highway's southernmost spot is a beloved local attraction.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

The island residents are known for taking their quirky sense of humor with them to the grave.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

This Pringle-shaped ledge makes for the perfect photo op.

A strange rock in Chicago marks the spot where a tree once stood in honor of the 18th President.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A hollow cement depiction of time's inexorable effect on the human body.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

An exotic wildlife habitat right off The Strip.

San Diego's most historic and haunted home.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

An inconspicuous footbridge beloved by San Diego locals.