I visited this fine zoo in late May (2012) and I was thoroughly impressed! From a brief totally-informal sight survey in the parking lot, I noted that they have many visitors from foreign nations all around Italy, so it is a true tourist attraction.
The drive-through Safari park was nice, though not at natural as I've seen elsewhere. There is no "I'm in Africa" feeling on this drive.
The zoo's newer Sentieri d'Africa section was probably the highlight. It includes: a unique habitat with rhinos and hippos living together; white lions; a spacious chimpanzee island with a large, very active troop; a Madagascar section with many different lemurs; and an attractive Australian section.
The main portion of the zoo is very hilly, with many exhibits creatively built into the hills, most having plenty of space. Some of these included: Siberian tigers, snow leopards, spectacled bears, and a large South American yard. The Europa section is a steep woodland hillside with large fenced exhibits of wolves, mouflon sheep, and fallow deer -- with an open pasture for wisents at the top of the hill.
The Extinction Park is a long loop through the woods and by a valley pond, with lots of life-size realistic dinosaurs all around.
