Seattle's trophy roster is anchored by Rainier Square, F5 Tower, Russell Investments Center.

• Rainier Square — CBD, 2020.
• F5 Tower — CBD, 2017.
• Russell Investments Center — CBD, 2006.
• The Spheres — South Lake Union, 2018.
• Lincoln Square Bellevue — Bellevue, 2017.

TL;DR

• Rainier Square — CBD, 2020.
• F5 Tower — CBD, 2017.
• Russell Investments Center — CBD, 2006.
• The Spheres — South Lake Union, 2018.
• Lincoln Square Bellevue — Bellevue, 2017.

Trophy roster

**Rainier Square** (CBD), ~770k sqft, completed 2020. Amazon-anchored trophy. **F5 Tower** (CBD), ~660k sqft, completed 2017. F5 Networks anchor; ovular silhouette on the Seattle skyline. **Russell Investments Center** (CBD), ~950k sqft, completed 2006. Former Washington Mutual HQ, now Russell anchor on Second Avenue. **The Spheres** (South Lake Union), ~65k sqft, completed 2018. Amazon's biophilic conference centerpiece. **Lincoln Square Bellevue** (Bellevue), ~1650k sqft, completed 2017. Amazon-anchored trophy across the lake.

Key facts

Frequently asked questions

Which is the most prestigious Class A building in Seattle?

Rainier Square is the most-cited trophy benchmark in the Seattle market.

Editorial provenance

Reviewed by Miriam Hollander — Lead market analyst. Last updated 2026-04-15. See our methodology and editorial standards.

Primary sources for this page

• CBRE Marketview reports — CBRE
• JLL Office Insight — JLL
• Cushman & Wakefield Marketbeat — Cushman & Wakefield
• Savills World Research — Savills
• Colliers Global Office Outlook — Colliers

Full sources index · Submit a correction

Related topics

• Trophy Asset Selection — How to identify and evaluate trophy Class A assets for a flagship requirement.