1950
地下水道 Kanal 1957
1950
1990
1930
1930
2000
1950
2010
1950
1990
1990
1990
1920
2000
1960
1980
1930
2000
2000
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930
1930