The western wall is the most holy thing for the Jews ( and even for some chrostens because the western wall is a part of the Jewish temple ) .
Because the western wall Jerusalem is holy for the Jews, this is the most holy city for the Jews .
Jerusalem
The is no such thing as a "judaism".
see the attached Related Link.
The Sabbath (Saturday) and Yom Kippur; and to a slightly lesser degree, the festivals.
No, Jews worship in synagogues.
The Middle East, in particular the city of Jerusalem in Israel has holy sites for all 3 of those religions.
Judaism does not have a Holy Temple. It was destroyed in the year 70 by the Romans. In Jewish writings of today, it is simply referred to as the Temple in Jerusalem, the Holy Temple, or Beit Ha-Mikdash (Hebrew for house of holiness).
the only special building and the only one is the synagogue
Rabbis and cantors
Israel
Of course not.
Jews worship in synagogues.