LRI4690076 The Blessed lead by an angel: Detail from the triumphal arch with the Heavenly Jerusalem. Mosaic, early 9th c. S. Prassede, Rome, Italy - The Vision of Celestial Jerusalem - the elected, presented to St. Peter and St. Paul by an angel, advance to the gates of the city - Mosaic around 830. Triumphal Arch of the Basilica of Santa Prassede, Rome by Unknown Artist, (9th century); Santa Prassede, Rome, Italy; (add.info.: The Blessed lead by an angel: Detail from the triumphal arch with the Heavenly Jerusalem. Mosaic, early 9th c. S. Prassede, Rome, Italy - The Vision of Celestial Jerusalem - the elected, presented to St. Peter and St. Paul by an angel, advance to the gates of the city - Mosaic around 830. Triumphal Arch of the Basilica of Santa Prassede, Rome); Luisa Ricciarini; out of copyright.