A common sacred site in many such cultures is the burial mound.
Mecca
Jerusalem
Rabbis and cantors
Israel
Any place where there are people who honestly practice the Buddha's teachings could be said to be a sacred site. In addition, Lumbini, where the Buddha was born, and BodhGaya, where the Buddha attained enlightenment, are generally considered to be sacred sites.
Of course not.
The is no such thing as a "judaism".
south notherbecach
Jews worship in synagogues.
Judaism does not have a centralized leadership.
Belief in God and in the Torah.