An Unexpected Find
Galileo was an astronomer who discovered that the earth revolved around the sun. For this unorthodox teaching, he was excommunicated until he recanted. This basilica had a tribute to Galileo, with scenes of his trial and unusual markings on the marble floor. The floors were marked in such a way that the sun shining on them on certain days of the year would tell about the constellations, show when the day was the longest, etc.