Spruce Hollow Campground

Adults-only campground set in the woods near Traverse City, in northern Michigan, with rustic sites and electric hookups. Nudity is welcome throughout (not compulsory) but required in the pool. It is a “mixed” club: it welcomes both the naturist crowd and the “lifestyle” (swinging) crowd, with entry reserved for women on their own or accompanied by a man (single men are not admitted). Every summer weekend there are themed get-togethers, advertised on the campground's Facebook page; recently some have complained about music being too loud. It opens in late May for the summer season; you need to register before arrival by message or phone call. Dogs allowed; an informal atmosphere according to those who have stayed, who particularly appreciate the heated pool and the welcoming feel for first-time visitors.