The Crusader siege of Antioch lasted from October 21, 1097 to June 2, 1098. The Crusaders had it about as bad as the people inside the city. Lack of water and food caused many Christian soldiers to desert.
The Crusaders took the city by trickery.
Bohemond of Taranto made a deal with an Armenian Christian inside Antioch.
One night the Armenian let down a ladder and let the Crusaders in.
After they took the city, Kerbogha arrived to besiege the Crusaders.
The Crusaders sallied out of the castle to challenge the Muslims.
On June 28, 1098 the Crusaders, with the Holy Lance (a Christian relic found in the city) before them, defeated Kerbogha.
The Siege of Jerusalem (click to see a battle map)
The Crusaders arrived in Jerusalem on May 7, 1099 and began their siege.
An army of 7,000 crusading knights attacked Jerusalem and by the end of the siege, only 1,500 remained.
Jerusalem was taken by the Crusading army on July 15, 1099. Upon entering the city, the Europeans slaughtered everyone inside (Muslim, Jew, and Christian alike).