Arboretum D'Olhain
50°26′24″N 2°34′26″E / 50.44°N 2.574°E
The Arboretum d'Olhain (2 hectares) is an arboretum located in the Forêt Domaniale d'Olhain near Olhain, Fresnicourt-le-Dolmen, Pas-de-Calais, Nord-Pas-de-Calais, France. It is open daily without charge.