North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Four-story concrete hotel never opened to customers.

The king of U.S. high points towers over every other peak on the continent.

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

The only Florida state park with publicly accessible caves.

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

Once one of the largest producers of pig iron in the world.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

A building so large that it has its own weather.

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

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

A luxuriant botanical garden below sea level.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

A Circus legend leaves an unexpected endowment.

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

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 world's largest private aircraft collection.

The short-lived history of a new republic and British control in West Florida.

A haunted hill that supposedly defied gravity.

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

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