My mom's group had a playdate at Grant's Farm. Below is a description I copied and pasted from their website:
The 281-acre ancestral home of the Busch family, located just south of the city of St. Louis is home to more than 900 animals representing more than 100 different species. Grant's Farm, operated by Anheuser-Busch, Inc., has been a St. Louis tradition for over five decades.