Rohan Bridge, Stone arch bridge in Landerneau, France.

Rohan Bridge is a stone bridge 67 metres long over the Élorn, with five arches: one reaches a small island by a spillway channel, a second, barely visible to walkers, links that island to a smaller one mid-river, and three cross the main arm. Houses built on piers and upper floors in overhang line the span, among them the 1639 Logonna stone house of judge Jacques Gillart.

Built in 1510 by Jean II de Rohan, the structure initially housed a mill, chapel, and prison in its framework. The addition of residential buildings in the 1600s transformed its purpose, and by 1958 it became exclusively pedestrian.

The bridge carries part of the rue du Pont, and its houses were built from the 17th century on the upstream edge, resting on the bridge on one side and on wooden piles on the other. The miller's house and cloth merchants' houses stood here; the mill's two floors also served as a prison, with the miller as jailer.

Access is straightforward since the bridge is entirely pedestrian and closed to vehicles, making it easy to navigate on foot. Plan to visit during daylight hours when shops and restaurants are open, as this is when the setting shows its true character.

The structure stands at the boundary where tides influence water flow daily, creating a meeting point between sea and river systems. Few inhabited bridges survive in Europe like this one, making it a rare example of how water dynamics shape the daily environment.