ZGF designed the iconic 785,000 SF, 44-story office and hotel, a striking addition to downtown Seattle’s skyline. The project is the first quarter block site to be developed in the city with the remainder occupied by two historic buildings—the First United Methodist Church and Rainier Club—significant of Seattle’s history and founding families. The design of the tower maximizes the development potential by flaring out over the historic structures and subtly tapering back through a sequence of building planes. The office component, to be occupied by F5 Networks, features column-free floor space and floor to ceiling windows—the most per square foot than in any other building in the city—that maximize daylight and provide unobstructed views. The 189-room luxury hotel space is located on floors one through 16 and repurposes the church to include hotel meeting, event and amenity space including a restaurant, bar, spa, and 20,000 SF ballroom. The Mark is certified LEED Silver.



ZGF created a branded identity for the 750,000 SF tower to highlight the building’s many amenities and clearly guide tenants and visitors throughout the space. Elevators in the hotel and office cores include a custom designed pattern etched on an oil-rubbed bronze overlay, a detail to highlight the tower’s vertical expression and distinguish between the two uses.