This is very exciting.
There aren't many works by Giotto left in the world. Many of his works were whitewashed and repainted over by later Renaissance artists. He is given the title "First Painter of the Renaissance," although his rendering of the human form was not quite there, as it would be with the work of the later artists.
His Flight into Egypt is the one most often seen in the anthologies:
One of my all time favorite works is his Adoration of the Magi:
I like it because of the camels. Giotto had obviously never seen a camel before. Like most people of 14th century Europe, he was insulated from things and experiences outside of his small world. He could only paint the camels from other people's descriptions and how he imagined them to be. They are not accurate camels, but they are *honest* camels, painted as passionately and as honestly as he could humanly paint them.