In 1972, remains were archaeologically dug out of a first church, built in Carolingian style around the year 1000 on the site of current St. Martin church. Foundations of a second church built on that spot, in Romanesque style, were found as well. The present building had been constructed between 1234 and 1365 as the church of a college devoted to the cult of Martin of Tours, and since defunct. The current, conspicuous helmet crowning the bell tower had been added in 1572 in Renaissance style after a fire.
The church is surrounded by several portals of rather small dimensions, speaking relatively to the volume of the building. Some of these portals are bricked up. The largest portals display richly sculpted tympana. The coloured tile roof, reminding that of the Collégiale Saint-Thiébaut in Thann, is another striking feature of the church's exterior. The massive pillars that support the façade, an architectural rarity, give the front of the building a somewhat cumbersome aspect that contrasts with the airy look of the high apse windows. Another noteworthy detail of the building's exterior, testament to the troubled History of Jews in Alsace, is the presence of two 'Judensäue', one in the shape of a gargoyle, the other as a corner sculpture of a portal.
In the spacious interior, whose furniture had suffered bitter losses during the French Revolution, the most remarkable features are the exuberant Baroque organ case of 1755, (the mechanism and the pipes themselves, originally built by Johann Andreas Silbermann, were completely replaced in 1979), as well as the ambulatory, a unique feature in Alsatian churches. The many chapels that surround the choir display several medieval altars and statues. Of the remaining Gothic stained glass windows in the nave, the most noteworthy is a 13th century head of a beardless Christ, another rare feature.
Martin Schongauer's monumental Madonna of the Rose Bower was painted for the church in 1473 and stood there until 1972, when it was stolen. After its recovery in 1973, it was moved to the neighbouring former Dominican Church, another Gothic, but architecturally very different sanctuary.
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.