Oslo Badstuforening Kroloftet

Two Oslo Sauna Association saunas stand by the Alna River at Kroloftet, a former powder factory in Svartdalen: Jurten, a yurt with two stoves, and the architect-designed Svarttrosten, with a large window over the river and forest. Each holds 14 people, with cold showers and cold plunge pools. They open Wednesday to Sunday, with a naked session on Saturday mornings and a family sauna on Sundays. A shared ticket costs NOK 150 for members and NOK 260 for others; the Kruttverket bar is next door.