Airport Zurich (IATA: ZRH) is 40 km away from it and is the closest airport to it.
Things to do in Geretswil
1. Schauenberg
Schauenberg is a hill and ruined castle near Turbenthal, canton of Zurich, at 892m. There were fortifications since the Iron Age, and since the early 13th century, there was a wooden structure, in the 1250s extended to a massive keep.
If you have seen everything in Geretswil already, take a look on the outskirts of the town. If you're visiting the area, you may want to check out something from the following list:
Also, check out the photographs of other travellers of the area.