Kunsthochschule Tama
He was trained as a stonemason in a quarry and after that studied sculpture at the State Academy of Fine Arts in Karlsruhe from 1990 to 1996. Walter was awarded a DAAD -scholarship to Japan and worked at Tama Art University in Tokyo from 1997 to 1998. He gave lectures at the HafenCity University Hamburg and the Tama Art University Tokyo.