The Cathedral Church, also known as St. John's the Baptist Church, was originally built between 1098 and 1132. It has been almost entirely rebuilt, following the original design, after the earthquake in 1743. Inside one can admire a polychrome mosaic from 1178 and a crown in wood from 1594.
Here Ruggiero, son of Tancredi, was crowned King of Sicily in the year 1191, and in the year 1225 celebrations were held for the marriage of Isabella of Brienne, queen of Jerusalem, to the emperor Federico II.
Valuable paintings of several ages are collected in the chapels, sacristy and altars.
A chapel is dedicated to St.Teodoro's relics, the Saint of the city togheter with Saint Lawrence.
It's located side by side to the cathedral's bell tower, that was completed in 1795; from the other side there are the Bishop's palace and Seminary building, built in 1720 by using the materials obtained from the demolished Basilica of Saint Leucio.
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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.