Watergraafsmeer Watergraafsmeer Watergraafsmeer 1818 Watergraafsmeer MULTIPOLYGON(((4.918443 52.34865,4.923505 52.35577,4.936534 52.359236,4.952352 52.36298,4.958519 52.362823,4.96882 52.360253,4.968443 52.353601,4.964209 52.351159,4.948498 52.336991,4.945563 52.33698,4.931739 52.340074,4.918443 52.34865))) 1817-05-01 1921-01-01