The smallest post office in the United States is no bigger than a broom closet.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.

This isolated airport in the middle of the Everglades sees more alligators than planes.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

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

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

Located within a historic park, the beacon is the oldest standing structure in Miami.

A community of collapsing homes more than a mile out from the Florida coast.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

Iconic red and white plaques show the creative names invented to navigate the city streets.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This recreation of a 19th-century dime museum is full of oddities.

Large pioneer village showcasing life during boom times.

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

"The Most Boring Road in the State."

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

The watery grave of an impractical idea.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Continuing the tradition of the dime museum in style.