Kardaki Temple is an Archaic Doric temple in Corfu, built around 500 BC in the ancient city of Korkyra. The temple features several architectural peculiarities that point to a Doric origin. The temple at Kardaki is unusual because it has no frieze, following perhaps architectural tendencies of Sicilian temples. It is considered to be the only Greek temple of Doric architecture that does not have a frieze. The spacing of the temple columns has been described as 'abnormally wide'. The temple also lacked both porch and adyton, and the lack of a triglyph and metope frieze may be indicative of Ionian influence. The temple at Kardaki is considered an important and to a certain degree mysterious topic on the subject of early ancient Greek architecture. Its association with the worship of Apollo or Poseidon has not been established.
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.