For centuries Christian pilgrims were able to come and experience the Temple Mount, but escalating violence against pilgrims to Jerusalem (Al-Hakim bi-Amr Allah, who ordered the destruction of the Holy Sepulchre, was an example) resulted in the Crusades. The Crusaders captured Jerusalem in 1099 and the Dome of the Rock was given to the Augustinians, who turned it into a church, while the nearby Al-Aqsa Mosque first became a royal palace for a while, and then for much of the 12th century the headquarters of the Knights Templar. The Templars, active from c. 1119, identified the Dome of the Rock as the site of the Temple of Solomon. The Templum Domini, as they called the Dome of the Rock, featured on the official seals of the Order's Grand Masters (such as Everard des Barres and Renaud de Vichiers), and soon became the architectural model for round Templar churches across Europe.