A primary example is Weyerhaeuser’s new headquarters in the Pioneer Square national historic district. Developed by Seattle’s Urban Visions on a half-acre (0.2 ha) former parking lot, the eight-story, 213,000-square-foot (20,000 sq m) concrete, glass, and steel structure began as a speculative office building until Mithun partner and lead project designer Bill LaPatra brought Weyerhaeuser leaders to the site.