About Us
Christoph Kronhagel studied architecture at the TH Aachen and founded
In 1991, ag4 was founded in Cologne, an interdisciplinary team at the interface between architecture and media. Companies such as adidas, BMW and Festo have had ag4 stage their brand essence in their rooms using media. In this context, the technology for the transparent media facade was developed, among other things. In 2010, Christoph Kronhagel sold ag4.
Since then, Christoph Kronhagel has developed and implemented many new projects and business models in the field of media architecture.