The world-record holder for the longest bridge stretching continuously over water.

The second oldest continuously operating bar in Louisiana.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

Send a postcard while vacationing with Satan.

An important Mayan religious and trading center dating back to 200 BC.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The headquarters of a pioneering cast iron and cast aluminum cookware company is in ruins, but still standing.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

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

The museum chronicling a treasure hunter's dream, fulfilled.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

A building so large that it has its own weather.

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

A haunted hill that supposedly defied gravity.

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

Former wax museum from the 1960s, home to many wax U.S. Presidents and the famous White House miniature.

An icon among Florida's pre-Disney tourist attractions.