The Church of Saints Sergius and Bacchus, today known as Little Hagia Sophia, was built during the reign of Justinian in the sixth century. Its sophisticated centralized plan and distinctive dome belong to a remarkable period of architectural experimentation in Constantinople. The building predates Justinian's great Hagia Sophia and reflects the innovative architectural culture that flourished under his patronage. Inside the monument, a surviving inscription honors Emperor Justinian and Empress Theodora, preserving their connection to the building across nearly fifteen centuries.