There’s the Korean sauna, then there’s Wi Spa. The 24-hour mega spa is the granddaddy of Koreatown saunas: Couples, groups and families (children included, making it seem more like Disneyland at times) spend hours in the expansive co-ed jimjilbang which includes five different heated rooms, TV and Wi-Fi–outfitted lounge area, library and computer room, restaurant and sleeping room. Couples and groups laze (and sweat) in oversized T-shirts and khaki shorts, before heading into separate men and women’s dry and wet saunas. The basic body scrub ($60/30 minutes) is a must-do for baby-soft skin, while the Swedish and shiatsu-combo massage ($165/85 minutes) soothes away, through rough-and-tough pressure, tired muscles. There’s a $30 entry fee for services under $160.