Constantinople.
It is the city that Muslims face when they pray
Assalamwalekun mecca
The Ottoman Turks attempted to conquer the city From April 6,1453-May 29, 1453, when the siege ending with the Turks conquering the city.
Christianity, Islam, and Judaism
Christian knights hoped to recapture Jerusalem from the Muslims during the Crusades. The city of Jerusalem held great religious significance to Christians as the site of Jesus Christ's crucifixion and resurrection.
Armies of "christian" soldiers trying to liberate the holy christian city of jeruselum from the Muslims. Additional Answer: The crusades were attempts by the Western branch of Christianity (i.e. the Catholic church) to liberate Jerusalem (considered "the holy city") from the Turkish invaders who had recently arrived from the East. The Turks were not originally Muslims, but adopted Islam after arriving in the Middle East. The crusades had political as well as religious motives, and so did the Turkish expansion which eventually caused the end of the Roman Empire when Constantinople (today Istanbul) fell in 1453. The crusades were failures in every aspect, not least spiritually, and no Christian church or movement today approves of them.
It is Jerusalem
It was the world's major trading center.
Mecca and Medina
Constantinople
In April, 1453, the Muslims Jihad lay siege to the city of Constantinople (now called Istanbul.) The city was the capitol of the old Eastern Roman Empire and the center of the Eastern Orthodox Church. The siege went on for 55 days before the great walls of the city were breached. Bloodshed and rapine followed and, Constantinople became a Muslim city.
No, the only Muslims that came that far were Turks. They did not attack Byzantium until 1453. That was the first attempt to advance and the city fell.