This zoo was a great value for our family. Entrance was free and parking is free in the lots inside Forest Park. We only walked about 1 1/2 blocks from a free lot to the entrance.
The train ride was fun and helped us get our bearings on the layout. We loved all of the animal. Great variety.
Our one negative comment would be the Children's Zoo. It costs $5 a person, for our family- $25. It was basically some goats, rabbits and a few other farm type animals that we have seen a billion times at various places. Had we known what was (or was not) in the children'szoo, we would have saved our money!