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

A time capsule of Floridian history fights to survive on the banks of Chokoloskee Bay.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Electrical pylon in the shape of Disney's beloved mouse.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

Flamboyant architecture from the turn of 20th century.

3,000 market stands in five former Zeppelin hangars.

A striking 12th-century-style castle built on the edge of a cliff.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Here’s how Robert the Doll earned his reputation as the most haunted doll in the world.

A haunted hill that supposedly defied gravity.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

For more than 50 years, an iconic sign has greeted visiting “fudgies” to the Traverse City area.

Michigan’s most famous shoe tree.