Our next animal-related journey took us to Ueno Zoo.
Before reaching the zoo, it look us about a good 15-20+ mins walk from the JR Ueno station (longer if you want to explore the many areas of the park as there is a temple & a boat pond).
According to the Lonely Plant guide, Ueno Park is one of the top places to go Cherry Blossom viewing in early to Mid-April.
Even though we visited during September, it was still very crowded (not to mention very humid).
We went on a day that was popular for school field trips so we saw lots of cute elementary kids visiting too.
However, if you don't plan on visiting other Monkey Parks, Ueno Zoo has a lot to offer (you can literally spend almost a day here since the Zoo is so large). It is a bargain in fact, especially as the entrance fee is 600 Yen (adult admission; Children under 12 is free).
Let me give you a small taste of what Monkey Mountain offers:
One of the inhabitants I found interesting:
I found a comprehensive list of all the things you can do here on your visit.
If you find yourself in Tokyo, Ueno Park and Zoo is worth a visit, be sure to budget a day for it!