Panthéon, as it is most commonly known, is the Panthéon-Sorbonne University (Paris I). Panthéon is one of the world's best known universities - both in the fields of education and research - specialising in the fields of Economics, Law, Cinema, Arts, and Political and Social Sciences.
Once part of the University of Paris, Panthéon became an independent university in 1968, when, during a cultural revolution in Paris, several faculties seceded from their parent university. Naturally, each of these newly-founded independent universities was already specialised in a certain field, which led to each own being renown for that particular field.
Panthéon is spread around various campuses in central Paris, so the Parisian life is always an intricate part of students' life. 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.
It's quite easy to get to Panthéon. Just catch the metro to Cluny - La Sorbonne station, on line 10, or the RER to Luxembourg station. If you prefer the bus, just take one of these buses: 21, 27, 38, 63, 85, 86, 87.