text: Headquarters Its headquarters are situated at the Palazzo Della Rovere in Rome, the 15th-century palace of Pope Julius II, immediately adjacent to the Vatican on the Via della Conciliazione. It was given to the order by Pope Pius XII. Its official church is the Sant'Onofrio al Gianicolo in Rome, also given to the order by Pius XII. In 1307, after the suppression of the Knights Templars, the Canons Regular of the Holy Sepulchre, whose main priory was at San Luca, acquired the complex of San Manno. Francesco della Rovere, the future Pope Sixtus IV, was Arch-Prior there 1460–1471.
  Insignia
  Heraldry
  By ancient tradition, the order uses the arms attributed to the Kingdom of Jerusalem – a gold Jerusalem Cross on a silver/white background – but enamelled with red, the colour of blood, to signify the five wounds of Christ. Prior use of the symbol is in the 1573 Constitution of the Order.
  Conrad Grünenberg already shows a red Jerusalem cross (with the central cross as cross crosslet rather than cross potent) as the emblem of the order in his 1486 travelogue.
  Above the shield of the armorial bearings is a sovereign's gold helmet upon which are a crown of thorns and a terrestrial globe surmounted by a cross, flanked by two white standards bearing a red Jerusalem cross. The supporters are two angels wearing dalmatic tunics of red, the one on the dexter bearing a crusader flag, and the one on the sinister bearing a pilgrim's staff and shell: representing the military/crusading and pilgrim natures of the order.