Little Retreat Depot (Litodepo) is an outdoor sauna park on a former JR rail depot site, about seven minutes' walk from Omiya Station's west exit. Seven sauna cabins from makers across Japan use wood, pellet, electric and steam stoves, with a chilled kokolo sauna cold tub. Men and women bathe together in swimwear; no booking is needed. Open daily 11:00–21:00; one hour costs 1,500 yen on weekdays and 2,300 yen at weekends.