This lake in the Cascades lives up to its name, disappearing down a hole every spring.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The world's largest and most outstanding marl lake regularly changes color.

35,000 grape hyacinths flow like water down a garden hill.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Stories of sightless fish and ghostly cowboys are only a fraction of the legends surrounding this Kansas sinkhole.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

At 705 feet high, Brazil's "House of Stone" is the largest cave mouth in the world.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

The hottest, driest, and most scenic desert on Earth.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

A bright turquoise river cascades beautifully down stepped terraces in southern China.

A little-visited waterfall in an otherworldly landscape.

This giant green head remembers one of America's jazz giants.

Over 50 historic windmills whir away at this outdoor museum.

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.

To honor his gardening wife, this yard artist turns bowling balls into playful, colorful sculptures.

Community bookshelf of 25-foot-tall book spines.

A bronze kitty adorns the grave of the polar explorer who brought the original feline to the Antarctic.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

An autonomous oak in Alabama.