Paris V (5), as it is most commonly known, is the Paris Descartes University (Paris V). Paris V is usually considered to be France's top medical school, with its Pharmacy, Biomedical Sciences, Medicine degrees ranked in first place in France.
Part of the old University of Paris - in which it was the Faculty of Medicine - Paris V became an independent university in 1968, when, during a cultural revolution in Paris, all faculties seceded from their parent university. Each of these newly-founded independent universities was already specialised in a certain field, which led to each being renown for that particular field.
Paris V's main building is the former École de Chirurgie, right in the heart of Paris, so the Parisian life is always an intricate part of students' life. However, it does have other campuses around Paris. Plus, all students under 25 have free entrance to all permanent exhibitions at Parisian museums, as well as reductions for most temporary exhibits and guided visits.
To get to Paris V, just catch the metro to Odéon station, on lines 4 and 10. If you prefer the bus, just take one of these buses: 63, 86, 87, and 96.