Five years after the death of the painter and draughtsman, born in Lucerne in 1931, he is being given a retrospective. The observation that art arises out of internal necessity seldom applies more aptly than it does to Schurtenberger’s expressive painting. Having lived in seclusion in Reinsbach in Austria from 1983 onwards, his art increasingly became a counter-world for him. The exhibition shows the work of a great unknown figure in the Swiss art of the 20th century.