The HESS exhibition box will be at the Baseltor in Solothurn until 15 November 2020 and again from 14 May until 13 June 2021.

The 2020/2021 special exhibition provides a unique opportunity for people to learn about the most important companies in the Solothurn region, and also discover how the Solothurn region has developed in the past and will continue to develop after the 2,000 year celebrations for the town of Solothurn.