In context : On the shoulders of giants in the Latin Quarter
(From : Panthéon). From there go down Soufflot street and enjoy the view on the Luxembourg garden. But don't go there and make a turn right instead on Victor Cousin street. You're now on you way to the Sorbonne. Note that the meeting point for the observatory's visit might be on Cujas street.
It can be seen from Saint-Jacques street, opposite the Collège de France and Louis-le-Grand high school, and there are guided sessions organized by the Société Astronomique de France twice per week. One must book ahead and sessions are limited to 5, but it only cost 5 euros. And there is a balcony up there from which you can enjoy a stunning 360-degrees view of Paris.
- The Sorbonne - Formerly the house of the University of Paris, it now houses the Panthéon-Sorbonne University, Sorbonne Nouvelle University, Paris-Sorbonne University, Paris Descartes University, the École Nationale des Chartes and the École pratique des hautes études. The name comes from the Collège de Sorbonne, founded in the XIIIth century by Robert de Sorbon.