The Botanischer Garten Kaiserberg is a small but well-tended botanical garden on the Kaiserberg hill in the eastern part of Duisburg. It covers about 2 hectares and contains a collection of Central European and exotic plants, with themed sections including a rock garden and a medicinal plant collection. The garden sits at the edge of the Kaiserberg forest, which extends further up the hill and offers walking paths with views over the city.
It is a quiet retreat from the urban and industrial character of central Duisburg, and the combination of the garden and the adjacent forest makes for a pleasant half-day outing. Free to enter.