Our family was making a slow walking tour around Florence, simply following our noses and, to a certain extent, following the crowds. Eventually we came to this main square and the first thing that hit us was the 8 sided Baptistry of Saint John. To be honest, I thought that it looked rather artificial and I was genuinely wondering whether it had been draped in one great, ornate covering to hide building/restoration work just behind. But no, the white marble of this impressive building has been decorated just so. Incredible.
We didn't go into this building.