Church of Saints Sergius and Bacchus (Kücük Ayasofya Camii)

Built in the sixth century by Emperor Justinian I, the Church of Saints Sergius and Bacchus, also known as Küçük Ayasofya Camii, stands in Istanbul. The church’s design, with its striking resemblance to the larger Hagia Sophia, led to its nickname, Little Hagia Sophia. After the Ottoman conquest of Constantinople, the building was converted into a mosque. Today, visitors can explore its historical architecture, which reflects the Byzantine and Ottoman influences that have shaped the city over the centuries.