Italy, Lazio, Ostia Antica, mosaics from the Baths of Neptune.

Italy, Lazio, Ostia Antica, mosaics from the Baths of Neptune.

Italy, Lazio, Rome, Ostia Antica, mosaics from the Baths of the Seven Sages.

Italy, Lazio, Rome, Ostia Antica, mosaics from the Baths of the Seven Sages.

Italy, Lazio, Rome, Ostia Antica, mosaics from Aula dei Misuratori del Grano.

Italy, Lazio, Rome, Ostia Antica, mosaics from Aula dei Misuratori del Grano.

Italy, Veneto Friuli, Grado, clock detail, Campanile.

Russia, St Petersburg, Christ mosaic in dome, Church on Spilled Blood, also Church of the Saviour on Spilled Blood.

Russia, St Petersburg, Mosaic on the floor of the Pavilion Hall, Hermitage Museum.

Russia, St Petersburg, Ascension mosaic of Jesus Christ, St Isaacs Cathedral.

Italy, Tuscany, Florence, Florence Cathedral, Cattedrale Di Santa Maria Del Fiore, mosaic on exterior wall.

Italy, Tuscany, Florence, Florence Cathedral, mosaic of Jesus Christ above main entrance.