The Spreewald Therme is in the forest south of Berlin; there are salt-water pools, fitness…read moretraining, treatments, massages; a sauna, restaurant, juice bar, lounge and fireplace.
A day pass is € 23 but they have other options (e.g., a couple hours for € 14). The price structure, location, modern facility, and therapeutic water make the place popular. It's big and was crowded on my visit. How bizarre to travel to the countryside for that.
Getting there: arrival at Vetschau train station, from Berlin; the ride took about an hour. It had been recommended to travel by train (€ 21 for a VBB all-day pass/roundtrip ticket from Alexanderplatz) to Vetschau, and then take a bus to the Spreewald Therme, but on holidays (and perhaps weekends, too) buses don't run regularly from Vetschau to the Therme...The timetable showed that the next bus stopping near Spreewald Therme wouldn't arrive for hours...Called for a taxi, which took half an hour to arrive; the ride cost € 16. Going by car, and choosing a quieter day, perhaps a weekday outside of school holidays, may allow for a better experience.