3. Zaha Hadid

Friend of Pharrell and architect of many of the year's best buildings, Zaha Hadid exploded in 2012. When we thought things wouldn't get better than 2011—when she worked on the Olympic Aquatic Center and won a Stirling Prize for Evelyn Grace Academy—Hadid wowed us at the Venice Biennale and thrilled us with her design for the Eli Broad museum at Michigan State.

Hadid continues to change the world, one building at a time.