Join Seattle’s premier business address at Union Square. Over 1.8M square feet of office space in Union Square provides a built-in customer base with a diverse retail mix of Cortina & Cortina Café, MOD Pizza, Starbucks, Evergreens and more. Located in the heart of Downtown Seattle, Union Square offers an unparalleled retail opportunity within a distinguished Class A office tower, steps from top-tier hotels, national employers, transit and other Class A office buildings.