Centennial Plaza is a celebration park in commemoration of the State Centennial in 2012. The park was awarded through a very competitive design-build competition that revolved around a “seed” concept of Peoria’s potential in the coming century. An informative “Decades Walk” identifies concurrent World, state, and local events, both historic and pop culture, which have shaped our community and state. The design elements in the plaza included a vegetative shading structure that combines architectural features that interacts with the Decades Walk, open event lawn, bio-swale and an amphitheater shade structure. The drainage design required incorporation of approximately 110,000 c.f. of stormwater retention.