A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

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

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

These azure waters were thought to lead to the Mayan Underworld.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

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

A grove of colossal man-made flowers built to collect the sun's rays.

A popular swimming hole that hides one of America's most deadly diving spots.

The world's largest squirrel statue clutches a pecan bigger than your head.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

These dramatic cola-colored falls have appeared in a poem by Henry Wadsworth Longfellow and a song by Sufjan Stevens.

Turning night into day in Victorian-era Austin to thwart a serial killer.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

This shallow cave got its name from copious amount of human bones found inside.

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

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Its founder calls it a "proletariat art renaissance".

The smallest country in the world.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

A former utopian healing center created by a huckster and built by derelicts.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Not quite the menace it once was, this monster still has some chops.