It was a significant step for the German Freikörperkultur (free body culture) movement of that time period. In Berlin, in addition to several Freikörperkultur FKK-associations founded around 1900, there was now Koch's institute located in Berlin's Friedrichstraße, and nude swimming and gymnastics took place in Berlin's communal swimming hall . In addition, Koch also had a stately site in Selchow with sports and playgrounds, a lake and barracks.
