the marble floor of st.mark`s basilica venice

altarpiece ancient apse architectural architecture arrange artwork background basilica bright brilliant byzantine cathedral catholic christian christianity church colorful craftsmanship decorated decoration decorative design detail elements fine floor geometric golden greek handmade inside interior italian italy landmark lines luminous made marble mark marks mosaic mosaics nave old opus ornamental pattern pieces regular roman sacrament sacred saint sectile shape shapesnn shining sightseeing style techniques tessellatum tesserae texture tile tiles tour tourism triangular venice view work worship vintage