Cleaning of buildings in Essen: What clean rooms reveal about a city

Food is a city in transition – with industrial history, green parks, universities, offices, residential areas and cultural sites, which are used by many people every day. To keep all this neat and inviting, it takes more than just occasional cleaning. Professional building cleaning is often the invisible helper in the background, which ensures that buildings and interiors do not only work, but also work. The article Building Cleaning in Essen: W…