This picture was sent in by QD. He writes: "This large community park sits in the center of Peoria and has many attractions within. Dedicated in 1896, this park contains the Peoria Park District's main administration offices as well as the Peoria Zoo, Luthy Botanical Gardens and Glen Oak Ampitheatre."
CTTF sent the updated photo above in 2016. He writes: "This is a new addition to your Glen Oak Park in Peoria, IL page. This photo comes from a restroom building located near the tennis courts and the northern entrance in this park."