Portrait of the Four Tetrarchs. Porphyry sculptural group of four Roman emperors dated from around 300 AD fixed to a corner of the façade of Saint Mark's Basilica (Basilica di San Marco) in Venice, Italy.

- Image ID: R9W578
Portrait of the Four Tetrarchs. Porphyry sculptural group of four Roman emperors dated from around 300 AD fixed to a corner of the façade of Saint Mark's Basilica (Basilica di San Marco) in Venice, Italy. Stock Photo
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Portrait of the Four Tetrarchs. Porphyry sculptural group of four Roman emperors dated from around 300 AD fixed to a corner of the façade of Saint Mark's Basilica (Basilica di San Marco) in Venice, Italy.
Azoor Photo Collection / Alamy Stock Photo
Image ID: R9W578