Michigan Fun Family Camping The Holly KOA FUN! PARK offers the very best in Michigan fun, family camping! We are located in southeast Michigan, roughly an hour from Detroit, Saginaw, and Lansing, Michigan. Our campground makes a great weekend getaway. From our big pull-through RV sites to the landscaped areas for tent camping, you'll find a place to call "home" while you visit us. Want to "rough it" in comfort? Our one and two-room cabins or studio lodges are sure to please!