Near the Hospiz in the municipality of Airolo, the visitor gets a vivid impression of the Gotthard myth and hears about interesting aspects of mobility, water, energy, weather, climate and safety. The theme world is housed in an impressive tunnel and in rock caves of the former fortress "Sassa da Pigna". Visitors experience first hand what sustainability really means. Man’s use of natural resources takes center stage. Another highlight is the unique giant crystals of the Planggenstock.