We will be in Berlin in mid July for 3.5 days. We are due to arrive at 13:30 on the first day (our half day) and I am wondering if we'd still have enough time to go to the zoo. I like to get to know cities by going on a quick tour, but we wouldn't be able to do that until the following morning. The zoo is very close to our hotel; I'm estimating that we can get to the zoo by 15:00, however the ticket window (not sure about the zoo itself) closes at 18:30. That's probably too little time, right?
If we were to go another day, how much time should we allot? We probably won't go to the aquarium unless someone has a compelling reason (we've been to a few good ones elsewhere).