The Upper Rhine region is one of the European regions with the most fortified monuments from 2000 years of history. Since the fortified town of Germersheim joined FORTE CULTURA in 2017, a Franco-German cooperation network for fortress tourism has been established in the Upper Rhine region. The 4th symposium dealt with the question of how cross-border tourism for the fortress monuments of the Upper Rhine region can be organised in cooperation with the European cultural route FORTE CULTURA. The practice-orientated content provided information on the path from fortified monument to booked tourist destination. Specific travel modules for fortress tourism on the Upper Rhine were developed in workshop sessions.