Washington State History Museum


The Washington State History Musuem consists of a 105,000 SF three-story structure featuring a unique roof - three transverse vaults intersect the main longitudinal vault, creating a bold architectural feature.  The entry arch, public amphitheater, a 215-seat auditorium and many exhibit areas add to the unique character of this structure as it tells the story of the History of Washington. The roof is framed by a combination of curved pre-cast concrete roof elements and cast in place concrete beams. The balance of the floor structure is post tension concrete.