Embedded in the heart of the Watles hiking area is the artificial Spielesee Adventure Lake for children. The popular family-friendly pool is 1500 m² in size and only 40 cm deep. Here children can pan for gold, glide along on rafts and through ditches, as well as travelling over suspension bridges and under waterfalls. They can find gemstones in the Diamond Grotto. Children love the long slide into the water and the new Funballz, a water–walking ball which kids cab can hop and run with along the surface of the water.

On the Spielesee Lake, there are many wooden sun lounge chairs, in order to relax and enjoy the enchanting view from the splendid viewing platform. From there, parents can also easily keep an eye on the kids.

Children’s specials:
- Wooden raft
- Diamond cave and waterfall
- Bridge across the lake
- Waterfall 2.5 m and 3m
- "Pan for Gold"
- Adventure slide
- Slope for inner tubes
- Funballz
- Watles Rider
- Free Running Parcours

Parents’ specials:

- Wooden sun lounge chairs
- Relaxation areas
- Picnic areas
- Kneipp ditch and dry path
- Watles Rider