The Warsaw Jewish Cemetery is one of the largest Jewish cemeteries in Europe and in the world. Located on Warsaw's Okopowa street and abutting the Powązki Cemetery at 52°14′51″N 20°58′29″E / 52.24750°N 20.97472°E, the Jewish necropolis was established in 1806 and occupies 33 hectares (83 acres) of land. The cemetery contains over 200,000 marked graves, as well as mass graves of victims of the Warsaw Ghetto. Many of these graves and crypts are overgrown, having been abandoned after the German invasion of Poland and subsequent Holocaust. Although the cemetery was closed down during World War II, after the war it was reopened and a small portion of it remains active, serving Warsaw's small existing Jewish population.