Take a (free) ride up or down Le Tréport’s funicular, which joins the upper and lower parts of the town. The ride, at less than 2 minutes, cuts through a tunnel in the cliff on a 155 metre long track.
I’m sure that fans of the Scandi-noir styled French cop drama Witnesses (or Les Témoins) will recognise the funicular.
I loved that program and really hope a third season is filmed. Fingers crossed.