Assuming that this is referring to the First Crusade, the Christian Forces besieged and later conquered the city of Jerusalem. They forced the Muslim Forces to retreat and slaughtered any Muslims, civilian or military, that they found within the city walls.
Jerusalem
Jerusalem
There are many cities that could qualify under this header. The one you are probably looking for is Jerusalem, but Granada (as well as most other Spanish cities), Acre (as well as most other cities in Lebanon, Israel, and Palestine), all the way up to Lašva Valley (as well as other cities in the numerous Jugoslav ethnic cleansing massacres against Muslims), and numerous other examples. This is not to say that it never went the other way, but Muslims were generally more willing to live with subservient Christians than Christians were willing to live with subservient Muslims.
Jews, Muslims, and Christians :)
Jerusalem is considered holy by Muslims, Jews, and Christians.
JERUSALEM was a holy city hotly contested between Muslims and Christians during the centuries of the Crusades.
It is the city of Jerusalem. It is sacred city for Muslims, Christians, and Jews.
Jerusalem is the Holy City for Christians, Jews, and Muslims.
The Seljuk Turks (Sunni Muslims) conquered the city form the Abbassid Arabs (Sunni Muslims).
It is Jerusalem
Jerusalem.