The Metropolitan Cathedral of the Annunciation construction began on Christmas Day, 1842 with the laying of the cornerstone by King Otto and Queen Amalia.
Workers used marble from 72 demolished churches to build the Cathedral's immense walls. Three architects and 20 years later, it was complete. On May 21, 1862, the completed Cathedral was dedicated to the Annunciation of the Mother of God by the King and Queen. The Cathedral is a three-aisled, domed basilica. Inside are the tombs of two saints killed by the Ottoman Turks during the Ottoman period: Saint Philothei and Patriarch Gregory V.
Saint Philothei built a convent, was martyred in 1589, and her bones are still visible in a silver reliquary. She is honored for ransoming Greek women enslaved in Ottoman Empire's harems.Gregory V the Ethnomartyr, Patriarch of Constantinople, was hanged by order of Sultan Mahmud II and his body thrown into the Bosphorus in 1821, in retaliation for the Greek uprising on March 25, leading to the Greek War of Independence. His body was rescued by Greek sailors and eventually enshrined in Athens.
In the Square in front of the Cathedral stand two statues. The first is that of Saint Constantine XI the Ethnomartyr, the last Byzantine Emperor. The second is a statue of Archbishop Damaskinos who was Archbishop of Athens during World War II and was Regent for King George II and Prime Minister of Greece in 1946.
The Metropolitan Cathedral remains a major landmark in Athens and the site of important ceremonies with national political figures present, as well as weddings and funerals of notable personalities.
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.