Ice castles soar 30 feet into the air and glow with an ethereal light after sunset in Colorado thanks to the artistry of Brent Christensen at Silverthorne.

Kelvin-Helmholtz clouds are a rare and often spectacular weather phenomenon whose rolling, wavy appearance can be both beautiful and frightening.

Powered with solar panels, this tube-shaped prefabricated getaway is perched amidst glaciers in the Alps, providing mountaineers with a cozy place to sleep.

A Hamburg hotel features a reclaimed shipping container and a gritty dockside harbor theme with ship cabin-like rooms and a 'loading dock' in the lobby.

The exciting New7Wonders campaign that ended on November 11th, 2011 raised awareness of the Earth's natural beauty and in that respect, everyone's a winner.

The New7Wonders of Nature campaign has winnowed 440 prospects down to just 28 "Official Finalist Candidates" with voting scheduled to end on November 11, 2011.

These 14 botanical gardens and parks, from Scotland to Costa Rica, represent some of the most beautiful mash-ups between wild nature and human cultivation.

Thousands of stunning aerial photographs of the Earth in all its varied beauty have been made available to the public by photographer Yann Arthus-Bertrand.

A beautifully designed nature observation tower in Latvia ascends 120 feet into the sky and features caged balconies from which to enjoy the view along the way.

China's Zhangjiajie National Park features breathtaking geological formations - seemingly gravity-defying pillars that inspired the floating mountains in Avatar.

These 10 cute-as-can-be electric cars and electric car concepts add a fluffy dollop of squeal appeal to your sustainable, pollution-free driving experience.

Castles that might have otherwise fallen into ruin have been transformed into palatial hotels, universities, museums, apartments and even affordable hostels.

Cracking Art Group's ethically responsible approach to ambient art involves creating outsized animal assemblages expressed in colorful recycled plastic.

Geysers have entranced observers from time immemorial with their sudden appearances, explosive power and the ability to conjure up rainbows on a cloudless day.

Villagers in Rawa Buaya, Indonesia, believe if they lay down on the railway tracks, electrical energy carried within the steel rails will cure their ills.