St Catharine's Church is a Grade I listed building, built between 1875 and 1882. The church was constructed in the Decorated Gothic style, and dressed with Forest of Dean sandstone. John Prichard, Llandaff's diocesan architect, who also worked on the restoration of Llandaff Cathedral, was heavily involved in the design project, although the building work was superintended by a local architect named John Jones. It replaced the older St Baglan's Church, a pre-Norman building that was largely destroyed by a fire in 1954.
The interior uses Quarella stone, Forest of Dean sandstone and 'Penarth' alabaster to create a polychromatic effect. The chancel is decorated with bands of marble and has a marble floor inlaid with Italian mosaic tiles. A brass memorial plaque commemorates Griffith Llewellyn and his wife Madelina (née Grenfell), both of whom are buried in the churchyard, close to the ruins of the original Saint Baglan's church.
Stained glass windows in the church include designs by William Morris (St Cecilia with Musical Angels) and Edward Burne-Jones (Crucifixion with the Virgin Mary and St John), as well as a Celtic Studios design installed in 1972.
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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.