Łomża Cathedral was built between 1504-1525 and inaugurated in 1531. According a legend there was a church near the current cathedral already in c. 1000 AD. After the cathedral was damaged in Swedish wars it was restored to Gothic Baroque style in 1691-1692. The southern sacristy was added in 1886. Łomża Cathedral was again damaged in Second World War and rebuilt between 1952-1958.
The most precious treasure in the cathedral is a painting of the Virgin Mary dating from the 16th century and crowned by Pope John Paul II in 1991. There are also beautiful Renaissance items like two tombs of local governors from 1575 and 1611.
References:Very informative. Thank you.
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.