The Palazzo Pubblico (Public Palace) is the town hall of the City of San Marino as well as its official Government Building. The building, where official State ceremonies take place, is the seat of the Republic's main institutional and administrative bodies: the Captains Regent, the Grand and General Council, the Council of XII, and the Congress of State.
The main section of the building is topped by battlements over a series of corbels. The clock tower above also features such an arrangement with battlements and corbels. The overall design is similar to the Palazzo Vecchio in Florence, but on a much smaller scale.
Located on the site of an ancient building called the Domus Magna Comunis, the current building was designed by the Roman architect Francesco Azzurri and was built between 1884 and 1894. After a hundred years of existence, it was becoming unsafe in today's standards, so a complex restoration project was undergone. The intervention was completed by the internationally renowned architect Gae Aulenti on 30 September 1996.
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.