Provins is a medieval market town about 80 kilometres southeast of Paris, and one of the best-preserved examples of a medieval city in France. It was listed as a UNESCO World Heritage Site in 2001, not for any single monument but for the extraordinary completeness of its medieval urban fabric — the ramparts, the towers, the underground vaults, all still intact.
In the Middle Ages, Provins was one of the great cities of Europe. The Counts of Champagne hosted the famous foires de Champagne here — trade fairs that drew merchants from across the known world, making Provins second only to Paris in commercial power. The Count of Champagne was among the most powerful lords in France. That prosperity has since faded, which is precisely why the town looks the way it does: it stopped growing before anyone could tear the old parts down.
The central landmark is the Tour César, a twelfth-century keep with a distinctive form — a square base rising to a round tower, topped with four small spires added by the Templars, who had a strong presence here. Below the town, a network of tunnels extends beneath the hill, originally used for storage and commerce during the fairs. Umberto Eco immortalised them in Foucault's Pendulum, where Colonel Ardenti calls Provins "a magic place, still redolent of secrets." You can take guided tours of the tunnels. Other highlights include the Grange aux Dîmes — a massive tithe barn that once held goods awaiting market — and the intact circuit of medieval ramparts. The unfinished Collégiale Saint-Quiriace and the Place du Châtel anchor the upper town.
Provins makes an easy day trip from Paris (about 90 minutes by train from Gare de l'Est), but it rewards a longer stay if you want to explore at a slower pace.