St Arbogast Church in Surbourg takes its name from and pays homage to the first bishop of Strasbourg, Saint Arbogast. The dates originally from the 11th century and is part of the Route Romane d'Alsace, along with the Abbey Church of Saints-Pierre-et-Paul in Wissembourg and the Church of Saint-Ulrich in Altenstadt.
The building rises on a basilical plan with three ceilinged naves ending in a transept and vaulted apses in cul-de-four. Inside, the large arcades rest on alternating supports: columns with cubic capitals and masonry pillars with simple transoms. Note the quality of the apparatus in small rubble alternating red and gray sandstone (outside the nave and apse of the north apsidiole) as well as the decorative size of the facings (inside pillars of the nave).
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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.