The Hagen Open-air Museum (German: LWL-Freilichtmuseum Hagen – Westfälisches Landesmuseum für Handwerk und Technik; English: "LWL Open-air Museum Hagen – Westphalian State Museum for Craft and Technics") is a museum at Hagen in the southeastern Ruhr area, North Rhine-Westphalia, Germany. It was founded, together with the Detmold Open-air Museum, in 1960, and was first opened to the public in the early 1970s. The museum is run by the Landschaftsverband Westfalen-Lippe (LWL, regional authority for Westphalia and Lippe within North Rhine-Westphalia). It lies in the Hagen neighbourhood of Selbecke south of Eilpe in the Mäckingerbach valley.