Gamzigrad-Romuliana is a Late Roman palace and memorial complex built in the late 3rd and early 4th centuries, commissioned by the Emperor Galerius Maximianus. The strong fortifications of the palace are an allusion to the fact that the Tetrarchy Emperors were all senior military leaders. The spatial and visual relationships between the palace and the memorial complex, where the mausoleums of the Emperor and his mother Romula are located, are unique. Criterion (iii): The fortifications, the palace, and the memorial complex are a unique testimony of the Roman construction tradition pervaded by the ideological programme of the Second Tetrachy and Galerius himself as their builder. Criterion (iv): The group of buildings comprising the architectural complex of the Emperor Galerius is unique in that it intertwines the ceremonial and the memorial programme.