Rivers and streams are key elements of the urban Green Infrastructure system. Their presence is associated with a wide range of ecosystem services, with particular emphasis on cultural, supporting and regulatory. Riverside lands have become a place of rest for residents, they also play a decisive role in regulating the city’s water and climate regime. The presence of rivers in urbanized areas is also associated with risks that are the result of not only inundation episodes, but also water pollution, sometimes to such a large extent that it becomes dangerous to human health. In the article, selected examples related to riverside locations of garden festivals (Gartenschauen) in Germany, activities aimed at revitalisation and permanent accessibility of river banks are discussed, while ensuring flood safety.