The Xylokerkos or Xerokerkos Gate of the Theodosian Land Walls of Constantinople, now known as the Belgrade Gate (Belgrat Kapısı), lies between towers 22 and 23, around 750 meters to the north of the Yedikule Fortress. Its name derives from the fact that it led to a wooden circus (amphitheatre) outside the walls. The gate complex is approximately 12 meters wide and almost 20 meters high, while the gate itself spans 5 meters.| Turkish Archaeological News