The geohash is at Buckten (canton Basel-Landschaft) near Olten (Solothurn).
 Who Went
TheOneRing - by public transport.
 The Expedition
I decided quite rapid to go to the geohash. Therefore I took the train to Olten (SO) and from there to Buckten (BL). You could already see the geohash from the train station, it was only approx. 500m away. It was located on a hillside, which was quite steep. Because of the sunny weather, I had a wonderful view over the countryside and a small brunch while watching. After taking the necessary proof photos I walked a little bit through the village taking some photos, and then going back to Olten by train.
The area of the geohash from the train station
The train station of Buckten
Proof that I reached the right coordinates...
...at the right date (upper left corner)
The tripod marks the geohash
The village of Buckten from the geohash (tripod is again at the geohash)
The old city hall in Buckten