Allas Sea Pool

Allas Sea Pool is a harbour-front pool and sauna complex at Katajanokanlaituri 2 A, beside Market Square in central Helsinki, Uusimaa, Finland. The setting is distinctly urban: the pools sit on a pier facing the Presidential Palace, the Uspenski Cathedral skyline and the passing ferries. The complex combines a heated pool at about 27 C, a seawater pool at about 13 C and several saunas, with a cold plunge for contrast bathing. Saunas include mixed and single-sex options with harbour views, so visitors can choose between sociable and quieter sessions. The experience is built on Finnish contrast bathing rather than a treatment menu: a hot sauna, a cold plunge or sea-water dip, then rest on a terrace or deck chair. There are no therapists on staff as part of the ticket, and the venue's reputation comes from its prominent location, its year-round swimming and its popularity with both locals and visitors. Facilities include changing rooms with lockers, showers, a restaurant and a cafe terrace. Swimwear is required in the pools and mixed saunas. Entry is by day ticket, priced at about €16-19 (about $18-22 USD) per adult according to guides, with towel rental at €8.90 (about $10 USD); current prices should be confirmed at allaspool.fi. The ticket is open-ended, but swimming and sauna end at 20:40. Hours are Monday to Friday 06:30-21:00 and Saturday-Sunday 08:00-21:00, with some weeks closing at 22:00 on Friday and Saturday. The warm pool was scheduled for maintenance in spring 2026, so a check of the website before visiting is worthwhile. Tickets can generally be bought on arrival, and queues can form on sunny summer weekends and winter evenings. The complex is a short walk from the ferries to Tallinn, the tram lines and the Market Square, making it easy to fit into a city day.