How did mosaics transform the interior walls of Sant’Apollinare Nuovo?

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At the church of Sant’Apollinare Nuovo in Ravenna, mosaics fundamentally transformed the interior walls by shifting away from the use of inserted, framed panels toward a continuous decorative "skin" that covers the entire wall surface.1

This transformation involved several key changes:

  • Integration with Architecture: The mosaics were designed to match the scale of the building's architectural components. The figures grew in size and effectively replaced the function of pilasters in articulating the room.1
  • Wall Space Optimization: To provide more room for these expansive pictorial programs, the number and size of the windows were reduced.1
  • Aesthetic Shift: The interior is dominated by a gold background, accented by the use of silver—a novelty in Italian mosaics of that period. While earlier 5th-century works often utilized a painterly, illusionistic style, the mosaics at Sant’Apollinare Nuovo feature more static figures with less depth, emphasizing a monumental integration of art and architecture.1