Witterswil is close to the city of Basle in the north-west of Switzerland and is 100 km from Berne and Zürich, and 250 km from Geneva.
From the centre of Basle take the main road out of town to the south-west, following the directions either via Binningen > Bottmingen > Therwil or via Oberwil > Biel-Benken and then to Witterswil. Alternatively use the motorway link (J 18) and exit at Reinach South or Aesch.
By public transport (tram)
Take a No. 10 tram (from the SBB railway station or elsewhere in the city centre) in the direction of Flüh/Rodersdorf. From the tram stop in Witterswil it is only 5-7 minutes' walk (north on the Biel-Benken road) to the TZW Technology Center.