Ravenna, Italy: Baptistery of the Orthodox: Empty Chair

Detail of dome mosaic in the Baptistery of the Orthodox (Neonian Baptistery; Baptistery of Neon; Battistero Neoniano; Orthodox Baptistery; Battistero Ortodosso; Baptistry of the Cathedral). An empty chair with three gems flanks each altar (separated by columns), in the outermost register of the dome mosaics. The empty chairs represent the places reserved in heaven for the Elect.