The Oracular Sanctuary and the Thermal baths of Mura (1st century) are in the Roman town of Edeta, which was a municipium in Latin law as part of the Conventus Tarraconensis of Hispania Citerior. Archaeological work has found remains of a 20,000 square metre complex made up of Temples, Thermae, hospitium, and tabernae, with some interesting fresco paintings. These have been analysed by the Scientific Laboratory of the Opificio delle Pietre Dure, examining their stratigraphy by means of Optical Microscopy with diffuse and ultraviolet light, SEM Electronic Microscopy, with QBSD analysis of elements by means of EDS probe and the Oxford INCA system. The results are particularly interesting through having found gypsum plaster in the pictorial layer, chlorine in the intonaccino, crushed brick in the intonaco and in the paint, and phosphorus in the pictorial layer.