Provins

The underground tunnels begin beneath the medieval square and don't stop — a network of merchants' cellars, storage vaults, and connecting passages that maps the entire footprint of the old town below ground. Provins in France was one of the principal Champagne fair towns, a place where wealth from medieval trade built walls, towers, and a rose industry that still perfumes the village every June.

Provins was one of the principal towns of the Champagne fairs — the largest trading events in medieval Europe — where merchants from across the continent exchanged goods under the protection of the Counts of Champagne. The underground tunnels, originally merchants' cellars, stretch beneath the entire upper town and are partially accessible on guided tours. The Tour César, a 12th-century octagonal keep, rises from a motte at the town's highest point and provides views mapping the medieval layout of walls, gates, and market squares. UNESCO inscribed Provins as a World Heritage Site in 2001. The town's association with roses dates to the return of crusaders bringing the Rosa gallica from the Holy Land — the June rose harvest is celebrated with an annual festival, and rose products (jam, honey, sweets, perfume) form a local cottage industry.