For decades, the river island has been called a 'conflict zone' related to its public use; it claims those with dogs, naturists and LGBT enthusiasts, as well as textiles (non-nudists) and families in the area.
Another problem is the intensive use, so on peak days, up to 4,500 visitors search for recreation, almost half a million a year, among them also people from neighboring cantons, and therefore causing additional road transport traffic.
The city police forces regularly patrols on the ground,[2][3] and the municipal authorities started to assign beware of the naked signs in August 2015.
Orientation boards inform on the endemic flora and fauna, so the riparian zone may be crossed over a 320 metres (1,050 ft) long wooden bridge those material consists of the urban forests, and allows to discover with open eyes and senses what lives and grows here.
The costs of 9.4 million Swiss Francs, are provided by the city and cantonal government, and some companies in collaboration with the World Wildlife Fund Switzerland, which claims the place as very important to our rivers and streams, so that they can create their very structure.