The Latin Quarter is the dense student district on the Left Bank, a weave of medieval lanes, bookshops, small cinemas and cafés below the Sorbonne. You climb from the river through streets too narrow and crooked to have been redrawn, like rue de la Huchette, which follows a line set in the Middle Ages. Rue Mouffetard runs uphill as a market street that has sold food for around a thousand years. The University of Paris rose here in the 1200s and the quarter has been built around students ever since.
Older layers sit under the bustle: this hill was the core of Roman Lutetia, and you can stand in the cold rooms of its public baths and sit in the ruins of its amphitheatre. Uphill stands the Pantheon, where France buries its writers and scientists. Shakespeare and Company keeps its English-language stacks by the river. The lanes nearest the water have turned touristy, thick with restaurant touts; a few streets higher, students still argue over coffee.