In the middle of the Hamburg City are the ancient ramparts and the famous far beyond the city limits park \ In this there is the old botanical garden greenhouses with the cast and the largest Japanese garden in Europe . The entertainment facilities encourage to participate. To select playgrounds , pony rides, mini-golf and trampolines, water play area, a pottery shop or the roller rink are used in the winter an ice rink . In the summer months the children are offered daily theater performances are also clowns, magicians and circus performers to admire. A special highlight is the summer concerts in the bandstand and the nightly water -air concerts .