Travertine is one of the natural rocks in sedimentary rock type. Travertine is used usually to coat buildings. Therefore, it is important to know radiation interaction with travertine. In this study linear attenuation coefficient as a result of interaction of radiation with matter for some travertines in Turkey has been investigated. The measurements have been carry out by using gamma spectrometer system. This system contains Nal(Tl) detector and Multi-Channel-Analyser (MCA). In measurements radioactive sources were used at 662, 1173 and 1332 keV which are obtained from Cs-137 and Co-60 sources. The measured results were compared with the calculation obtained using computer code of XCOM.