If your trip to Altenrhein Airport (ACH-St. Gallen - Altenrhein) is all booked but your travel itinerary is looking a bit empty, let us give you a helping hand.Take a detour to Skigebiet and leave the airport behind. It's one of those attractions you shouldn't leave off your itinerary. After that, head toward Evangelische Kirche Heiden, which is also worth checking out.