Klangweg, St Gallen
Kids will need little motivation to hike this three-stage, 7.5km (one-way) trail as they have 27 musical installations to play with en route. These range from cow bells to pipes and a xylophoneseesaw hybrid. The Klangweg Billet (CHF32) includes the return cable-car trip, while the trail can take anything from 1.5 to six hours to complete, depending on how many stages you tackle.
Start at Alp Sellamatt, 9656 Alt St Johann. Until Oct 21. www.klangwelt.swiss.