Google translation : The Landhaus Walter was built 1914-1915 by architect Fritz Schumacher. Template designed by North German farmhouse , today it is a listed building . The city park was opened in 1914. He is a 148 -acre public park in Hamburg's Winterhude . He is considered as an example of the conversion of the German garden and landscaping garden to the people by the people park at times of industrialization in the 19th Century . In 1909, Professor Fritz Schumacher, head of the building department of the city of Hamburg . In 1910 Fritz Schumacher worked with Fritz Sparrowhawk a design for the park . Four years later, the park was opened . But since the great city hall was only provided as part of the city park concept in 1924 finished , the construction period was actually 10 years. According to the draft Schumacher , the main east-west axis, completed by the City Hall which was the main entrance. It was this to be a three-part hall building on the south which joined the building of the bath level . At the western end of the East-West axis is the built in 1912 and 1915 to a design by Oscar Menzel water tower . In 1930 this was converted to the Hamburg planetarium . Of the remaining historic buildings in the park , the drinking hall is received .