See Bad Romanshorn

The seaside resort is one of the most varied and largest swimming pools around Lake Constance. The green area is so large that you can easily find oases of peace under the trees on the grounds, without children's screams and beach volleyballs flying around your ears.
Of course, the well-anchored raft that is usual for a seaside resort is not missing, nor is the shaded children's paddling pool. For active swimmers, the 50-metre sports pool is available. International swimming competitions are also held here several times a year. If you want to prove your fitness on the 50-meter lane, you can do so undisturbed even during peak hours, as a lane is usually reserved for sporty swimmers.
A whirlpool to be massaged by the jets, an adventure pool with a current channel, a diving board and a 100-metre-long slide round off the offer around the water. Beach volleyball courts, table tennis tables and much more - there is something for everyone at the seaside resort, including a fine meal or refreshment.