The Britzer Garten, a large park in the south of Berlin, was designated after the local part Britz of Berlin's borough Neukoelln. It was constructed for the Bundesgartenschau 1985, in order to provide a new landscape park to the citizens in the southeast of West-Berlin, who were at that time cut off from the surrounding countryside. The park covers an area of 90 hectares and offers nature and garden architecture (rose garden, rhododendron woods), playgrounds, lakes and hills as well as multicolored flower patches, matching the particular season and extensive lawns for any leisure activities. Architecture and art (e.g. the "Karl Foerster pavilion") play a vital role in the park. Along the restaurant at the "Kalenderplatz" the largest sundial of Europe and a solar system walkway, measuring 99 metres of diameter can be seen. It was planned by architects Juergen Dirk Zilling, Jasper Halfmann and Klaus Zillich.