• Allow 1.5 to 3 hours for the self-guided route; guided tours take about 1.5 hours, and English-speaking guides need booking ahead at extra cost
• Tickets at the gate only, sold at the desks before the entrance, and a kept ticket lets you back in
• Bunker air-raid effects and the Siberian deportation exhibit tell hard history, so prepare younger kids or skip those stops

CEPR Szymbark is an open-air heritage park in Kashubia, best known for a house built upside down that visitors walk inside. The grounds also hold the world's largest piano, two Guinness-record longest boards, a Siberian house beside a model labor camp and train wagons, and a partisan bunker reached by a low tunnel, with air-raid sound effects. Kids also get a Kashubian fairy-tale land, bread baking and a playground.