After the German invasion of Holland, the Jewish side of the city almost disappeared from the face of Amsterdam. Today, Yodenbürth is the Jewish quarter of Amsterdam, which in the 17th century was the centre of attraction for Jewish rabbis and scholars, bankers and jewellers from all over Europe, has become an ordinary landmark of the city. Near the ancient Portuguese synagogue there are four Ashkenazi synagogues combined into a single complex. Of course, one must not ignore the House Museum, where, whilst in hiding from persecution, a Jewish girl Anna Frank wrote a book. The museum has a cafe and a bookstore. There are several kosher restaurants in the Dutch capital that offer a variety of kosher food. The restaurants serve not only customers who observe kashrut but also all residents of Amsterdam and guests of the capital who want to learn more about the Jewish culture and cuisine.