One of the most characteristic elements of the Benedictine monastery is, without a doubt, the strong two-tone colour of the main materials used to build it.
Try to touch a marble column on the staircase then one of the lava stone steps leading to the library, and you’ll immediately notice how different they are.
If you touched them you would feel an immediate difference between the two materials: the marble is smooth with no superficial imperfections, while the lava stone is porous and rough.