Socially inclusive science communication has to take place where people spend most of their time — within their communities. The concept of knowledge◦rooms uses empty shops in socially disadvantaged urban areas for offering low-threshold, interactive science center activities. The commentary carves out essential features that contributed to the success of the pilot project. Most importantly, the knowledge◦rooms had to be welcoming and comfortable for visitors of various backgrounds. The spaces were easy to access, the initiators were seen as trustworthy actors by temporarily becoming part of the community and the offer was respectful of the time and knowledge of its users.