I have tended to avoid the left bank in recent years, having long ago been put off the tourist aspects of the Boulevard Saint-Germain and Les Deux Magots. But staying next to the Sciences Po meant that I have had a chance to get to know the Faubourg Saint-Germain better, with its well preserved side streets, its antiquaires, its courtyards and gardens. I liked the scientific bookshop at 48, Rue Jacob with its display of old opticians’ equipment and eyeballs:- 

The doorways further down the street in the Rue Jacob and surrounding neighbourhood:-

The Square Gabriel-Pierne at the end of the Rue Mazarine:- 

And the Musée Delacroix:-