A Wisconsin icon is celebrating a major milestone. Old World Wisconsin is celebrating its 50th anniversary. It opened up back in 1976.Going to Old World Wisconsin is like traveling in a time machine to the 1800s. You've got blacksmiths, general stores, or even the first-ever church in Milwaukee County. And yes, this is the actual first church, not a replica. They moved it from its original location to Eagle, Waukesha County. In fact, that's the …