Swing am See, the private swingers club Romantica, is set in an old villa in Radolfzell on Lake Constance. It runs sex parties with a hot and cold buffet, drinks with and without alcohol, a sauna, highly erotic themed rooms, SM rooms, a cellar disco, a naturist garden, a lounging lawn and massages, all included in one entry fee. New rooms were added in 2026, including a Cleopatra room in the bar area, a Mona Lisa room upstairs and a pole-dance pole at the bar.

The club opens on Wednesdays from 4 pm to 8 pm and on Saturdays from 8 pm to 1 am, with Thursdays and Sundays for special events only. New guests are shown around the villa. There is a dress code: sexy clubwear, lingerie or erotic outfits, and no street clothes, everyday jeans or tracksuits. Prostitution and drugs are not tolerated. Covered parking is right at the house.