What amusement parks have in Nanjing? And how to get there?

Hi, highly recommend you go to Xuanwu Lake, Mochou Lake, Binjiang Park, and ZHongshan Botanical Garden.
To Xuanwu Lake: you can take subway line 1, or bus nos. 1, 3, 8, 15, 22, 28, 30, 33, 35 and get off at Xuanwu Gate.
To Binjiang Park: you can take subway line 10 and get off at Olympic Sports Center. Or take bus 161 to reach.
To Zhongshan Botanical Garden: take bus no. 20, 203, and 315.

I recommend HongShan SenLin Zoo.
Address: 129 HuangJiaWei, Nanjing, Jiangsu, 210028
How to get there:
East Entrance – Located on Hongshan Road (红山路). Buses No. 22, 24, 40, 66 and 74.
North Entrance – Located on Heyan Road (和燕路). Subway or Buses No. 8, 30, 35, 54, 64, 72, 77 & 308.