The city of Aachen became active in the field of sustainability in the early 1990s and joined the UNs‘ Agenda 2030 in July 2018. Circular economy was already implemented in Aachen in the waste management concept of 1993, which follows the guiding principle of avoidance before recycling and recycling before disposal. In order to implement this guiding principle, incentives are set through the design of waste charges. During the development of the waste management concept , a waste advisory service was set up in 1992, with information offers, campaigns and even waste education, which still exist today. In order to achieve a high level of recycling, there is a wide range of offers for the collection of recyclable materials and delivery systems with recycling centers, recycling container locations and even green waste collection. By signing the circular cities declaration, the city of Aachen commits itself to continue and improve its efforts in circular economy. Circular economy should be integrated even more in administrative processes as well as in development strategies and city planning, including through the participation of citizens.