he/she faces har ha-bait (temple mount) inside the Old City of Jerusalem. When a Muslim prays from the same location the person turns his/her behind toward the Old City of Jerusaelm. This is indeed the reality, one that symbolizes the importance of the city of Jerusalem to a Jew vs. a Muslim. Christians, incidentally, when praying from the same location would also turn their back on the city!
Woman moderately wounded by firebomb thrown at her car in north J'lem (Haaretz)
from the article: Knesset give preliminary okay to bill requiring 80 MKs to divide J'lem