With their sleek design and awe-inspiring height, skyscrapers have been a fixture of our cities for well over a century. And today, these modern towers of Babel are both architecturally stunning and environmentally conscious.
Here, Sustainable Energy takes a look at the winner and finalists from the 2014 Emporis Skyscraper Awards, which were announced towards the end of last year.
Arguably the world's foremost accolade for tall buildings and structures, the award focuses on "aesthetic and functional design." To be eligible, buildings must be at least 100 meters tall.