The results of geophysical prospections in an archaeological site of hispanic type in Panama (Central America) are presented in this article. The archaeological site of Old Panama has been intensively investigated with the objective to know the space - time organization of man in the past. A magnetic prospection was developed in the central sector of the site; the rank of magnitude of the magnetic anomalies allowed the identification of certain characteristics of hispanic type and in addition, the presence of metallic devices, typical of more recent occupation times. On the other hand, the results of three electrical tomographies are presented. From these results it was possible to identify the depth of the metallic objects detected by magnetic prospection..