Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

This work of public art symbolizes the maritime history and the modern creative industry in Fremantle.

A golden egg-shaped sauna in the Arctic tundra.

A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

The world's smallest movie theater runs on solar power—an attraction in itself.

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

This massive solar generating facility in the Nevada desert has been plagued by difficulties.

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.

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.

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

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

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

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.

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

An unpaid bill, a stolen stone, and a famous fashion designer rest peacefully alongside a heroine of Highlands history.

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

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

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

Inside a Scottish castle hangs the tattered remains of a flag with murky origins and supposed magic powers.