Since centuries most of the Dutch Jews have lived in Amsterdam. There are for example still a lot of ‘Jiddisj’ words in the Amsterdam dialect. The Jews contributed to the prosperity of Amsterdam, to the establishment of the Dutch West Indies Company, and to the Dutch Golden Age. Before World War II, 10% of the population in Amsterdam was Jewish, which meant about 80,000 people – but only 20% of them survived the Holocaust, though. The most well-known victim in Amsterdam is the Jewish girl named Anne Frank, who wrote her world-famous diary while in hiding. Her hiding place in the Secret Annex is a museum, called the Anne Frank House, situated in the centre of Amsterdam at Prinsengracht 263-267.