The artist also believed in a human's right to a window. He thought that "Some people say houses consist of walls. I say houses consist of windows."The repetition of identical windows next to each other and above each other as in a grid system is a characteristic of concentration camps.Windows in rank and file are sad, windows should be able to dance.A person in a rented apartment must be able to lean out of his window and scrape off the masonry within arm's reach. And he must be allowed to take a long brush and paint everything outside within arm's reach, so that it will be visible from afar to everyone in the street that someone lives there who is different from the imprisoned, enslaved, standardised man who lives next door. (Hundertwasser 1990)Hundertwasser wanted to allow the residents of his building to personalise their windows.