You have four days left to register your proposal for the 2011 eVolo Skyscraper Competition, one of the most exciting annual architecture design competitions. Students, architects, engineers, and designers from around the globe are asked to submit their genius ideas for groundbreaking, unique, high-tech, out of this world skyscrapers. The sky is literally the limit in this design competition and you’ve got only four days left to register your project, and then 11 days for you or your team to submit your boards. Winners get a ton of press on numerous blogs (including Inhabitat) as well as inclusion in eVolo’s annual magazine. So get crackin’ and submit your best idea!