Results of the structure characterization of Ag/Fe superlattices are presented. Two methods were combined in the investigations : atomic force microscopy and X-ray diffraction (XRD). The studies shaw that Ag(001)/Fe(001) superlattices are epitaxial, and their structural quality is unusually high as for metallic superlattices. XRD profiles are interpreted using two different computer programs, SUPREX and IM-SL.