Knights Hospitaller
The Order of Knights of the Hospital of Saint John of Jerusalem (; ), also known as the Order of Saint John, Order of Hospitallers, Knights Hospitaller, Knights Hospitalier or Hospitallers, was a medieval and early modern Catholic military order. It was headquartered in the Kingdom of Jerusalem, on the island of Rhodes, in Malta and St Petersburg.
Temple Church
After the capture of Jerusalem in 1099 by the Crusaders, the Dome of the Rock was given to the Augustinians, who turned it into a church (while the Al-Aqsa Mosque became a royal palace). Because the Dome of the Rock was the site of the Temple of Solomon, the Knights Templar set up their headquarters in the Al-Aqsa Mosque adjacent to the Dome for much of the 12th century. 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 along with the Church of the Holy Sepulchre upon which it was based soon became the architectural model for Round Templar churches across Europe.