Because Anhalt-Zerbst had guaranteed security and freedom of business for Jews, Jever became a center of Jewish life in Frisia, reaching its peak in the late 19th century. After that many youngsters left for larger cities where they hoped to find better economic opportunities (and since the 1920s also to escape growing anti-semitism). This caused the community to shrink to only half of its former size: by 1933, there were only 98 Jews left in Jever. The synagogue (inaugurated in 1802) was completely destroyed in the Night of Broken Glass, and at least 63 Jever Jews were killed in the Holocaust. Incorporations On 1 July 1972, the neighbouring municipality of Cleverns-Sandel was incorporated into Jever. Population growth The population of Jever, from 1939 to 1 January, increased significantly after the Second World War due to the influx of displaced persons. A further leap occurred in 1972 after the former Cleverns-Sandel community was incorporated into the town of Jever. In 2015, the proportion of foreigners was 3.92 percent. They come from 64 nations, most of them from the former Yugoslavia, followed by Italians and former citizens of the Soviet Union. Points of interest Jever offers a variety of historical, cultural, technical and also botanical monuments, which refer to the different epochs of the history of the Jever area, spanning over 1,000 years. The city offers guided tours of the town and churches. In addition, there are several museums that concentrate on a specific theme, or offer changing special exhibitions in addition to a main theme. Sacred buildings Old church The Evangelical Lutheran town church stands on the church square in Jever, on the site of its predecessor churches. When the previous church on this site had burnt down, the new building, was consecrated in 1736. It subsequently burned down on 1 October 1959. This fire also destroyed the three-manual organ built by Johann Adam Berner in 1750–1756. The Amsterdam merchant Diedrich Garlichs, born in Neuende, had donated it. New church In 1964 the present church was built, a modern, strongly staggered central building, connected to the preserved apse of the destroyed church. Seen from a distance, the building gives the impression of a "city crown". Dieter Oesterlen (1911-1994), the architect, stated that his intention was "to clearly separate listed buildings from new buildings". According to him, "both structures come to their own architectural effect". The sandstone framing of the entrance portal