1420 Fifth Ave
Seattle, WA 98101-2343
Callison is an international architecture firm based in Seattle, Washington. Callison was founded by Tony Callison in 1975 and now has 800 employees around the world. The firm plans and designs retail, hospitality, mixed-use, workplace, corporate and healthcare projects worldwide. It was also ranked in 2008 as the number one retail design firm in the world by Building Design magazine.