Some of the cool places and activities in and around summer Chongqing (be warned:  the places can be as packed as boiling dumplings in water, in most cases, the easier to get/cheaper/more packed, the worse the quality. ):

Levels:

very very packed
very packed
packed
crowded

1. Caribbean sea world (加勒比海水世界):  Nan An (南岸), ocean simulation machines. Day 130rmb, night 98rmb. very packed

2. Happy Water Cube （欢乐水魔方）: JiuLongPo (九龙坡), ocean simulation machines. Day 120rmb (105 advance),  night 100 rmb, very packed

3. Foreigner Street water park， Nan An (洋人街水上乐园):   Crowded but in the city. 35 rmb pp for 17 water activities, very very packed

4. South Mountain in Nan An (南山，南岸): The largest Taoist temple in the area, the Botanic Garden, the WWII museum, packed during weekends

5.  JinDaoXia, BeiBei（金刀峡，北碚）： Gorges along JiaLing River.   hiking, crowded
6. Chengdu happy valley (成都欢乐谷), water simulation and winter ice world. 150 rmb, packed
7. White water -

- PengShui (彭水): A'YiHe white water (阿依河漂流). 200 rmb pp.  9km long, 200 rmb pp

- WanSheng (万盛): TongGuTan (铜鼓滩漂流) white water. 100  rmb pp

- BaNan (巴南): FuYingXia (佛影峡漂流) white water. best in long pants and shirts.  120 rmb pp, crowded

- NanChuan (南川): ShengLongXia (神龙峡漂流) white water. 2.8 kn long, 86 meter fall. 90 rmb pp

- GuiZhou TongZi (贵州桐梓): GuYeLang (古夜郎漂流) white water,  7 km. 106 rmb pp, fishing, boating, grass land, crowded

8. Eating in the river: Beibei (北碚),  PianYa Ancient Town(偏岩古镇). July 15  to Aug 28, packed
9. WanSheng: Black Mountain Valley （万盛黑山谷）， water valley， hiking, crowded during weekends

10. NanChuan: Golden Buddha Mountain （南川金佛山）。 falls, valleys, hiking and mountain climbing。 155 rmb pp entrance & cable care, crowded during weekends
11. WuLong: Fairy Mountain （武隆仙女山）。 UN heritage site, caves, grass land, horse riding, white water,　camping and hiking, crowded
12. JiangJin: SiMianShan (江津四面山). preserved forests, falls, lakes, hiking and camping, 110 rmb pp
13. YongChuan: Bamboo Ocean  and Tea Mountain(永川竹海). hiking in 50k acres of bamboo sea and 30k  acres of tea mountains，Pear picking festival with pear wines and pear cakes.  30 rmb pp. crowded
14. FuLing： WuLing mountain national forest park （武陵山国家森林公园，重庆市涪陵）, average 19.7 C in summer, mountain, grass land, buddhist temples and Wu river hiking， 40 rmb pp， 20 rmb per child
15. BeiBei jinyun mountain peak：bamboo mountains. Close to city with the gorges of Jialing River（缙云山，重庆市北碚区嘉陵江温塘峡畔）.  buddhist  temple above clouds,  hiking, 15 rmb pp, packed
16. HuaYing mountain in GuangAn (广安,华蓥山):　Cool Mountain, caves, buddhist temples, grape picking festival and Chinese Liquor Museum.  88  rmb pp

17. Xiling Snow Mountain (西岭雪山, 四川)：Snow mountains in Sichuan with average 10 - 25 C in summer, summer skiing on grass slope. 20 rmb pp

18.  DaoCheng, SiChuan（甘孜藏族,稻城）： Average 10 - 12 C in the hot summer, hiking in foot of the tibetan holy mountain, vast grass land, rainbow colored lakes, forests, ice falls.  80 rmb pp

19. YanZiGou， Sichuan（磨西镇,燕子沟,四川）： Preserved forests and mountain wetland, mysterious tibetan snow mountains. horse riding.  100 rmb pp

20.  HaiLuoGou， SiChuan (海螺沟，四川)： ice falls, snow mountains in the summer, average 10-12 C in summer. 82 rmb pp, crowded

21. TuJia Minority summer festival (土家族):   July 22 till end of summer in ShiZhu (石柱), Yellow Water National Forest Park, average 21 C all summer, join the TuJia minority to perform, live, party, mountain climbing, CS, and outdoor camping in the summer.