This chapter focuses on the work of conservation at the site of Qusayr 'Amra, a bathhouse located 80 km east of Amman, in Jordan. The site was built by the Umayyad prince Walid b. Yazid during the caliphate of his uncle Hisham, probably between 730 and 743 AD (111-125 H.), and its interior walls are covered by mural paintings. I explore how archaeology and conservation have contributed or interfered with the understanding of the monument, and how authenticity can be defined in a site that has seen at least three major conservation interventions. It will also discuss whether the paintings can really be defined as "Islamic Art," fitting a narrative of royal power that uses symbols and iconographies that are borrowed from the cultures that preceded the arrival of Islam in the region.