Eu–Mers-les-Bains / Le Tréport tramway
The Eu–Mers-les-Bains / Le Tréport line was a metre-gauge tramway that began operation in 1902, serving the border area between the departments of Seine-Inférieure (now Seine-Maritime) and Somme. It provided transportation for both residents and tourists among the towns of Eu, Mers-les-Bains, and Le Tréport for over thirty years.
Source: Wikipedia — Eu–Mers-les-Bains / Le Tréport tramway (CC BY-SA 4.0)