This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A fake town founded by Western movie stars is now becoming a hip desert community.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

The only thing stranger than stumbling onto these philosophical musings is the story of the homesteader who created them.

A regular looking rock with an unbelievable history.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

These layered sandstone mountains in China look like they are made of pressed crayons.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

Climb down into the largest sinkhole in Qatar.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

After millennia of erosion by sand and churning water this Brazilian valley now looks like a lunar fantasy.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

Rare recess caves fill this unbelievably beautiful Ohio park.

This extraordinary geological oddity resembles human-made pavement.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

A stranded woman lived alone on this remote island for 18 years, inspiring the great children's novel "Island of the Blue Dolphins."