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Seattle Center’s legacy of providing residents and visitors access to world-class arts, education, and recreation opportunities in a central location began in 1962 with the Century 21 World’s Fair. The Seattle Center Century 21 Master Plan guides the ongoing redevelopment of the Seattle Center's 74-acre campus in response to the needs of a diverse and dynamic community. More information on the Century 21 Master Plan can be found at the bottom of the page.

As stewards of the campus, the Seattle Center department is actively working on major maintenance, capital improvements, and long-term planning projects, including:

Seattle Center and the Seattle Center Foundation are proud to announce the completion of the Seattle Center Strategic Vision and 10-Year Action Plan—a bold, forward-looking roadmap to guide the campus into the next decade.

Developed through nearly a year of research, community input, and best-practice benchmarking from cultural districts around the world, the plan lays out a clear strategy to ensure Seattle Center remains a vibrant, inclusive, and sustainable civic space for generations to come.
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Seattle Center and Pacific Science Center are planning for the future — together. Explore our new partnership focused on unlocking public spaces, preserving history, and creating new opportunities for learning and innovation.
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Construction is under way for the redevelopment of Memorial Stadium at Seattle Center. The reimagined, state-of-the-art stadium will be a place for everyone, including year-round student athletics, education, and a diverse array of arts, culture, entertainment, and community events, while creating new open space and transforming the heart of the Seattle Center campus for future generations.
Memorial Stadium Microsite
Seattle Center has engaged GGN to redesign Thomas Street over four blocks between 5th Ave. N. and 2nd Ave N. with a new festival street design featuring quality paving, landscaping, lighting and seating. Thomas Street is the busiest pedestrian corridor on the Seattle Center campus, its retail nexus, and the point of arrival for visitors from around Seattle, the region, and the world, and connects to the surrounding neighborhoods. The project seeks to unify and revitalize Thomas Street, creating an engaging public space that complements Seattle Center’s mix of programs, attractions, and open spaces and invites visitors to linger and enjoy. The project is currently in Schematic Design.
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Bagley Wright Theatre Exterior Upgrades

The exterior of the Bagley Wright Theatre, home of Seattle REP, will benefit from recladding and replacement of select areas of the roof. Visitors can expect to see scaffolding around the building as the project progresses. Theatre operations will continue as usual.

Seattle Center Emergency Power Upgrade

Planning and design are underway to replace a 60-year old generator in the Armory with a new generator which will be powered, at least in part, by renewable resources. The new generator will support emergency functions in both the Armory and Fisher Pavilion. Many renewable resources are being considered in the design, including a solar installation on the Armory roof. This multi-year effort is planned to be completed in late 2026 or early 2027. Pictured is a concept design.

Wireless Infrastructure Upgrades

Major upgrades to campus wireless infrastructure are under way, which will result in higher quality service for all visitors. Full project completion is anticipated in early 2026.

Download Campus Planning Documents

Century 21 Master Plan Downloads

Campus Sponsors