The interior continues the bands of black and white marble, while elaborately inlaid marble paving one of the cathedral's primary attractions, with large sections regularly covered for protection covers the floor with 56 pictures of biblical and allegorical themes, done over two centuries by some 40 artists.
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The floor of the cathedral's interior features 56 images that took 200 years to complete.
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Inside the cathedral, the floor is completely plain, with no artwork or decorations of any kind.