Great place to visit, and if you are planning to g...

Great place to visit, and if you are planning to go the, prepare to spend there a full day. On paid days it is the best time to go there. You don't feel it is overcrowded and you can enjoy each exhibit without pressure from other people behind your back, and are ablr to take plenty of pictures. On Wednesdays it is free and way too many of people go, prepare yourself for a long lines and not being able to see most of the exhibitions. My friend who went there on free day did not enjoy their visit, so I choose to pay, and highly recommend to buy tickets online. Pickup the full package deal for special exhibits and rides because it is definitely worth the online price.
Pack your lunch food and drinks, because the choice is kinda poor, even for park food. Burger was dry, probably from being under the heat lamps, and it's better if you have your own water at you at all times.
Guiding yourself at the zoo was complicated, even using the printed map. We use a pen to cross places we already went, not to go twice by accident. Signage was a bit confusing. The exhibits we're spacious enough for the animals, with plenty of light, especially the gorillas, bears, and tigers.
Didn't skip a chance to do train rides, because it gives you opportunity to see elephants and show you hidden parts of the park. All in all it was a great day out thanks to a great weather and amazing zoo.