1095 CE - 1102 CE: The First Crusade is formed to recapture Jerusalem for Christendom. It is successful in its primary aim.

1099 CE: Jerusalem is captured during the First Crusade.

1099 CE: A Muslim army is sent to recapture Jerusalem but is defeated by the Crusaders at the battle of Ascalon.

1099 CE: The Crusader state, the Kingdom of Jerusalem is created.

1101 CE: Caesarea is captured by the Crusaders.

1101 CE: Acre is captured by the Crusaders.

1120 CE: Baldwin II gives the Knights Templar his palace at Temple Mount Jerusalem for use as their headquarters.

1147 CE - 1149 CE: The Second Crusade is launched to recapture Edessa for Christendom. It is not successful.

1149 CE: A new Church of the Holy Sepulchre is completed in Jerusalem.

1187 CE: Saladin defeats the Franks army at the Battle of Hattin.

1187 CE: Saladin captures Jerusalem.

1189 CE - 1192 CE: The Third Crusade is formed with the aim of recapturing Jerusalem for Christendom. Although some cities were recaptured, Jerusalem was not one of them.

1189 CE - 1191 CE: The siege of Acre during the Third Crusade.

1192 CE: The Crusader army led by Richard I of England arrives within sight of Jerusalem but decides not to attack for fear of a counter-attack by Saladin.

1192 CE: Conrad of Montferrat, king of the Kingdom of Jerusalem, is murdered by the Assassins.

1192 CE: Saladin takes Jaffa during the Third Crusade.

1192 CE: Richard I of England retakes Jaffa from Saladin during the Third Crusade.

1228 CE - 1229 CE: The Sixth Crusade is formed by Holy Roman Emperor Frederick II. It achieves through diplomacy Christian control of Jerusalem.

1229 CE: The Treaty of Jaffa is signed between Frederick II and al-Kamil to hand over Jerusalem to Christian rule.

1291 CE: With the fall of Acre, the Crusader States, including the Kingdom of Jerusalem, are absorbed into the Mamluk Sultanate.