Cologne is easily accessible via international air travel and by train.
Cologne is very well connected via 3 international airports in the region: Cologne/Bonn Airport is a hub for numerous low-cost carriers and can be reached within 15mins from Cologne Central Station. Cologne is also within less than an hour's train ride from Frankfurt/Main (55mins from Frankfurt Airport station to Cologne Central Station directly) and Düsseldorf (40mins from Düsseldorf Airport station to Cologne Central Station directly) airports.
The conference venue is within a 10 minute walk from Cologne Central Station. High-speed trains offer fast connections between Cologne and many German and European cities. The high-speed Thalys train connects Cologne with Brussels (1:47) and Paris (3:14); the ICE train directly connects Amsterdam and Utrecht with Cologne in 2:38 and 2:13 respectively.
GESIS and Maternushaus are located in the heart of Cologne near Cologne Central Station and the famous Cologne cathedral. The buildings are approximately 500m and 850m respectively away from the main station and the cathedral (less than 1/2 a mile).