At the Davie School Inn in Anna, Illinois (145 miles southeast of St. Louis, off the Great River Road National Scenic Byway), guests stay in airy classrooms-turned-suites, complete with kitchenettes, whirlpool tubs and Wi-Fi. The century-old school closed in 1996 and sat vacant until Gary and Andrea Dahmer purchased it in 2002. Blackboards hang in many rooms, and wood floors still bear the marks of student desks. The Dahmers even kept a drinking fountain—no hall pass required. From $85.