This chapter examines the transition of pagan architecture and religious practices in Late Antiquity, focusing on the treatment of Roman temples under Christian emperors. Drawing on legal texts, literature, inscriptions and archaeological findings, it evaluates whether temples were preserved, repurposed or destroyed. Challenging the common assumption of widespread temple destruction, it argues that such actions were neither systematic nor state-enforced. Instead, the chapter presents a nuanced perspective, demonstrating that many temples remained intact and were gradually adapted for secular or Christian purposes. Archaeological evidence suggests that abandonment and natural decay played a greater role in their decline than deliberate demolition. It also highlights how Christian emperors often sought to suppress pagan rituals while preserving architectural heritage, with legal measures typically prohibiting sacrifices rather than mandating temple destruction. By emphasising regional variations in temple transformations and critically assessing sources that exaggerate instances of destruction, the chapter challenges traditional narratives, offering a more complex understanding of religious and architectural change in Late Antiquity.

This chapter examines the urban development of Constantinople in Late Antiquity, tracing its transformation from a small Greek settlement into the capital of the Eastern Roman Empire. It focuses on three major phases of construction: Constantine’s foundation (324–37), the Theodosian expansion (379–450) and Justinian’s rebuilding efforts (527–65). The study explores key infrastructure projects, including city walls, forums, aqueducts, palaces, churches and harbours, demonstrating how these developments reshaped the city’s urban landscape. A central theme is the political and symbolic role of architecture in establishing Constantinople’s imperial identity. Constantine’s expansion laid the foundation for a monumental capital, incorporating existing Severan structures while introducing new landmarks such as the Forum of Constantine. The Theodosian period witnessed the construction of the formidable land walls and major religious buildings, further solidifying the city’s status as a Christian metropolis. Under Justinian, Constantinopolitan architecture reached its peak, with the reconstruction of Hagia Sophia serving as a defining moment in Byzantine building traditions. The chapter also addresses archaeological challenges, noting that while much of the ancient city has been lost due to war and modern urban development, ongoing excavations continue to provide valuable insights into Constantinople’s late antique transformation.