text: In gentle contrast to the austere Italian Gothic exterior of the Palazzo Vecchio by Arnolfo di Cambio ( architect of the Duomo ) , Vasari added ornate stucco and frescoes to the first inner courtyard for a Medici wedding in the 1560s ( the palazzo served briefly as a Medici residence until they moved across the river to the Palazzo Pitti ) .
  
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  The Medicis lived in the palazzo for fifteen years before moving to the Palazzo Pitti .