Piazza della Loggia is fine example of Renaissance piazza. The construction of eponymous Palazzo della Loggia (current Town Hall) began in 1492 under the direction of Filippo de' Grassi and completed only in the 16th century by Sansovino and Palladio. Vanvitelli designed the upper room of the palace (1769).
On the south side of the square are two 15th–16th century Monti di Pietà (Christian lending houses). Their façades are embedded with ancient Roman tombstones, one of oldest antique lapidary displays in Italy. At the centre of the east side of the square stands a tower with a large astronomical clock (mid-16th-century) on top of which there are two copper anthropomorphic automata which strike the hours on a bell. On May 28, 1974, the square was targeted by the terrorist bombing.
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.