Also called Fort du Réduit, this is an ancient fort with a historic chapel from 1674. Its facade is decorated with an allegorical motif.
Wikipedia (French) http://fr.wikipedia.org/wiki/Fort_Saint-Sauveur
Address 20 Rue du Réduit, 59800 Lille, France
Coordinates 50°37'45.883" N 3°4'17.648" E