He now also engaged in his hobby, archaeology and he became well known for his discoveries and descriptions of Germanic, Roman, Celtic and Neolithic stations in Northwestern Switzerland.
During World War II he was a soldier in the Swiss army and was ordered by his superiors to record with pencil and paint brush special historical events.
From 1945 to 1972 - interrupted by various voyages to France, Italy, Spain and Holland - Fritz Pümpin has painted in his beloved Jura area of Northwestern Switzerland.
He has succeeded in over fifty years of work to capture his homeland with convincing strokes of his paintbrush in his post-impressionist style.
Portraits, "nature morts", drawings and paintings from his voyages abroad, from his military service and from his archaeological excavations enrich his work.