Naantali has been a spa town since 1863, when the first bathing establishment opened and visitors began arriving from Turku and Helsinki for the season. The current Naantali Spa hotel continues that tradition on a grand scale, with pools, treatments, and a waterpark attached. It is one of the larger spa resorts in Finland and stays busy year-round.
Day passes to the spa and waterpark are available without an overnight stay, which makes it a practical option even for visitors passing through. The waterpark is popular with families whose children have already exhausted Moominworld. For adults, the spa side offers the quieter pools and saunas more typical of Finnish bathing culture.