Architect Magazine has released its list of the 50 best architecture firms in the US, with Westlake Reed Leskosky, William Rawn Associates and Gensler taking home the top three slots in the overall ranking. The ranking is based on three key factors: business, design and sustainability. Westlake Reed Leskosky also ranked number 1 in the Best in Business category, along with HDR and Spector Group in second and third place, respectively. NADAAA, Behnisch Architekten and Payette were the top three firms in the Best in Design category, while EYP Architecture & Engineering, William Rawn Associates and Leddy Maytum Stacy Architects were ranked as the top three in the Best in Sustainability category. For the full list visit Architect Magazine.