Added exceptional design challenges:

 

To discover more on a particular Challenge, visit the relevant link.

Package ChallengeCreativity ChallengePurple ChallengeYachts Challenge
Pattern ChallengeVehicle ChallengeUrban Creations ChallengeAdvertising Challenge
European ChallengeGlobal Awards ChallengeAdvanced ChallengeSchool of Design Challenge
Designers' ChallengeGood ChallengeArchitects ChallengeGreatest Architects Challenge
Foremost ChallengeGreatest Architecture ChallengeDesign Olympics ChallengeThe Best of All Challenge
Top Designers ChallengeTop Notch Design ChallengeProfessional Artists ChallengeMeta Challenge
Travel Accessories ChallengeCorporate Plans ChallengeResearch Proposals ChallengeCar Challenge
Art Works ChallengeColloquium ChallengeConventions ChallengeArchitectural Projects Challenge
Baby Products ChallengeTableware ChallengeConference Centers ChallengeMathematics Challenge
Blogging ChallengeSummits ChallengeAlmanacs ChallengeInstitutional Challenge
Additionally see: Catalog of Design Challenge | <- Index