The ten photographs shown here are from three series of images. The first series was taken during a journey in March 2019 at the Guggenheim Museum in Bilbao. The second series was created in 1992 in the context of an architectural excursion to California by the "Institut für Raumgestaltung" at the Vienna University of Technology. The third series of photographs was taken in 1990 for the exhibition "Definitionen" at the 175th anniversary of the Vienna University of Technology. Each photograph documents a unique moment in a specific location, the time of day and its distinctive daylight.