The Visitor Center a special building that can be purchased in the shop for 30 Diamonds under Buildings > Feature.
The Visitor Center allows you to access the following features in Zoo 2: Animal Park:
- Collections: You can complete collections by obtaining and breeding specific animals to certain levels. Collections reward you with special coat colors for certain species and exclusive animals for your zoo.
- Animal Overview: Shows you the animals you have, and if they have all of the equipment for their enclosure. Tapping on them brings you to the enclosures.
- Zoo Statistics: Shows you statistics about your zoo, such as how many quests you've completed, how many animals/decorations/enclosures/etc. you have, and some other things (akin to what you can see about your friends).