David Schalko, known as the director and writer of series such as Altes Geld and Braunschlag, is releasing his first photo book, Geister. It is the collection of an obsession: Schalko’s creatures, which he continuously and everywhere discovers, are stains and marks on streets, in backyards, and most prominently on house walls and in stairwells.

Peter Sandbichler: Unpredictable documents the large-scale sculptural installation by Austrian artist