The Phare des Pierres Noires, is a seacoast lighthouse in the Finistère département of France, designed by the engineer Victor Fénoux and constructed between 1867 and 1871; it was inaugurated on 1 May 1872. Situated mostly on the Pointe Saint-Mathieu, it allows ships to pass through the Chenal du Four and avoid at night and during stormy weather the hazards of the Chaussée des Pierres Noires. It is part of the commune of Le Conquet and is owned by the French state.
It was listed as an official French Monument historique by a decree of 31 December 2015. Under advisement from the Commission nationale des monuments historiques, on 20 April 2017 the French Ministry of Culture and Communication listed it under the title "Le Phare des Pierres Noires."
Wikipedia https://en.wikipedia.org/wiki/Pierres_Noires_Lighthouse
Coordinates 48°18'40.291" N -4°54'52.217" E