Walled Obelisk and Kadıköy are located in what country?
Walled Obelisk The Walled Obelisk (also known as the Constantine Obelisk or Masonry Obelisk) is situated near the Serpentine Column at the southern side of the Hippodrome of Constantinople (now Sultanahmet Square) in Istanbul, Turkey. Its original construction date is unknown, but it is named after Constantine VII, who repaired it in the tenth century.
Walls of Constantinople The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul in Turkey) 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.