Emperor Honorius moved the Western Roman imperial court from Milan to Ravenna. The city’s marshy setting and access to the sea made it easier to defend, and it soon attracted major church building. This political shift set the stage for Ravenna’s great mosaic commissions in the 5th–6th centuries.
A small cruciform (cross-shaped) building later called the Mausoleum of Galla Placidia was built and decorated with mosaics in the mid-5th century. Its luminous glass and gold tesserae (small mosaic cubes) show how late Roman naturalism blended with increasingly symbolic, otherworldly Byzantine styles. The site became a key early landmark for Ravenna’s mosaic tradition.
The octagonal Neonian (Orthodox) Baptistery was completed and given its dome mosaics in the later 5th century, under Bishop Neon. The central scene of Christ’s baptism and the surrounding apostles helped teach core Christian beliefs through easily read images. The baptistery also shows a workshop approach: coordinated teams produced repeated figures and patterns while keeping the program unified.
After taking power in Italy, Theoderic the Great ruled from Ravenna and invested in major religious buildings. His court supported new mosaic work that drew on both Italian and Constantinopolitan models. This political change also introduced strong tensions between Arian Christianity at court and Catholic (Nicene) Christianity in the wider church.
A private chapel for Ravenna’s Catholic bishops—now called the Archiepiscopal Chapel—was built shortly after Archbishop Peter II took office. Its mosaic program strongly emphasizes orthodox (Nicene) teaching, including Christ shown in a triumphant, military style. The chapel demonstrates how mosaics were used not only for devotion, but also for public theological messaging.
The Arian Baptistery was constructed for Arian worship during Theoderic’s rule, with a dome mosaic centered on Christ’s baptism. It is a rare surviving monument connected to Arian religious life in the late antique West. The building shows how different Christian communities in Ravenna commissioned similar forms (octagonal baptisteries) but used them within competing church structures.
Theoderic’s palace church was dedicated in the early 6th century and later became known as Sant’Apollinare Nuovo. Its long nave mosaics form one of the most extensive surviving cycles from this period, showing processions of saints and narrative scenes. The church illustrates workshop planning at large scale: many figures repeat in pose and rhythm, but details vary to keep the procession lively.
Construction began on the centrally planned church of San Vitale in the late 520s, initially under Ostrogothic rule. Funding from a wealthy local patron helped sustain the project over decades, even as war disrupted Italy. The long building timeline helps explain why Ravenna mosaics can combine different artistic habits and political messages in one complex.
During Justinian’s Gothic War, the general Belisarius captured Ravenna, bringing the city into the Eastern Roman (Byzantine) sphere. This shift changed who controlled church appointments, funding, and official imagery. In Ravenna, mosaics increasingly aligned with Constantinople’s court culture and religious policy.
The basilica of Sant’Apollinare in Classe was consecrated in 549 and received its major apse mosaic program in the mid-6th century. The imagery presents Saint Apollinaris in a paradisal landscape beneath a jeweled cross, joining local saint cult with universal Christian themes. Together with San Vitale, it marks the high point of Ravenna’s 6th-century mosaic production.
By the late 6th century, Ravenna became the seat of the Exarchate, a Byzantine administrative and military district created to defend imperial holdings in Italy. This strengthened Ravenna’s long-term ties to Constantinople and helped preserve its major churches and their mosaics through ongoing conflict. The city’s mosaic tradition, shaped by workshops and court-linked patrons, thus remained a visible legacy of Byzantine presence in the West.
In the early 8th century, imperial policy shifted toward iconoclasm—opposition to certain religious images—under Emperor Leo III. While Ravenna’s major 5th–6th century mosaics largely survived, the controversy marks an important endpoint for the earlier era when monumental figural mosaics were a widely supported form of church decoration. The period helps frame why Ravenna’s earlier mosaics became especially precious as witnesses to pre-iconoclast Byzantine visual culture.
Mosaics of Ravenna and Byzantine Workshops (c. 425–726)