NEWSPhotos: Wisconsin State Fair Park celebrates 125 yearsWisconsin State Fair Historian Jerry Zimmerman sits in front of a display of Wisconsin State Fair historic memorabilia inside the Exploratory Park at State Fair Park in West Allis. The Wisconsin State Fair opens and celebrates 125 years .Mike De Sisti/Milwaukee Journal SentinelA collection of news headlines are displayed.Mike De Sisti/Milwaukee Journal SentinelA poster marking 100 years of the Wisconsin State Fair is seen as part of a display.Mike De Sisti/Milwaukee Journal SentinelA collection of items are on display as historic memorabilia inside the Exploratory Park at State Fair Park.Mike De Sisti/Milwaukee Journal SentinelA collection of past Wisconsin State Fair entry tickets are on display as historic memorabilia.Mike De Sisti/Milwaukee Journal Sentinel