Granted that this unused card is highly aged, looks ancient, and is missing a small tip of the upper left corner.  But the photo, if any place looks medieval, this did.  Of course flash forward ten centuries or so, and the place has been touristed up a bit.   A top-ranked Google website reports that “In 2010, after being closed for a long time, the basement of the Orle d’Or Tower once again became accessible. The Sciences Society helped greatly in the reconstruction of its landing stage, where the sentinels were situated. This historic place makes clear the medieval role of the tower, which was difficult to understand after Henry IV ordered the demolition of the keep following the construction of the Joly Bridge.”  This is a most atmospheric postcard.  Grade: 3