In 44 BC, Rome colonized Butrint. One of the city's greatest periods of prosperity occurred under the Roman Empire. The Roman Forum was constructed in the Augustan period (27 BC-AD 14) and later aggrandized in the 2nd century AD. Numerous baths, fountains, and public buildings were constructed during this period. A prominent and wealthy woman, named Junia Rufina, adorned in marble a spring dedicated to nymphs bearing her name. The Forum came to an end in the late 4th century AD, as a result of a devastating earthquake.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.