A plaque marks the spot on the bridge where one of the first elephants in the U.S., Little Bet, was gunned down.

The world's largest rotating world.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

This riverfront statue honors the inventor of the first video games ever sold.

One New Hampshire alleyway has become home to a public gallery of feline art.

The gravestones in this historic cemetery are carved with mysterious faces.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

More than five miles of underground passageways.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A bizarre roadside attraction and the first instance of miniature golf in the world.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Public works and national defense project meant to carve a canal all the way across the state of Florida.

A mysterious castle built as a monument to lost love.

The largest retailer of seashells in the world.

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

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

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

These former theme park figures have a new lease on life outside a water plant-turned-restaurant.

Like Mardi Gras, only everyone's a pirate.

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

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

A monument celebrating the idea of reaching inaccessible places.

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