Excavations in the city center of the ancient city of Doliche in southeast Türkiye have brought to light the remains of a monumental apsidal building. Although the structure is poorly preserved due to looting and spoliation, the results of three seasons of excavation allow for an initial analysis and preliminary reconstruction. This article presents the building for the first time and discusses its importance in improving our understanding of monumental urban architecture in the region. The building is interpreted as a temple, and the article explores its potential links with apsidal temples in southern Syria and the Roman imperial cult.