Fiennes, Pas-de-CalaisFiennes is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.GeographyA farming village located south of Calais, at the junction of the D250, D232 and D151 roads.Places of interest The church of St. Martin, dating from the fifteenth century. The ruins of a castle, originally destroyed in 1320, rebuilt and destroyed again in 1543