Fort Wayne Children's Zoo is a great place. The family membership at $60 is a wonderful deal - we buy one each year and can visit free whenever we want, as well as being invited to the annual "Loo Au" where we get a free lunch and other goodies. There's a wide variety of animals and various special areas (Australia, Africa, rain forest). There are several gentle rides too - my only complaint would be that rides are now priced $2/person and this adds up quickly if you have several children.
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