Study trips
Basel
Study trip 2021
Vorarlberg
Study trip 2019
Copenhagen
Study trip 2017
Lisbon
Study trip 2015
Graz / Ljubljana
Study trip 2013
Warsaw
Study trip 2011
Ruhr Area
Study trip 2009
Copenhagen
Study trip 2007
Amsterdam
Study trip 2005
Madrid
Study trip 2003
Ruhr Area
Study trip 2001