Ketzin is where Ferdinand Hahn was born. The house that he was born in burned down when he was 2. So he was given a new home with the insurance money. This is the house.
There is a house that was commemorated as Ferdinand Hahn house 150 years after his birth.
FB is not working too well. so other posts, for now, will be on FB
FB is not working too well. so other posts, for now, will be on FB