What you'll hear inside Walls of Constantinople:

• 1
  Golden Gate (Porta Aurea)

  Constantinople's grand ceremonial gateway, a three-arched triumphal arch of polished white marble blocks, flanked by two massive square towers, reserved for imperial processions.

• 2
  Yedikule Fortress

  Built in 1458 by Sultan Mehmed II, this near-pentagonal fortress of seven towers served as an imperial treasury and later a notorious state prison beside the Sea of Marmara.

• 3
  Edirne Gate (Edirne Kapı)

  Set at the highest point of the Theodosian Walls, 76 metres above sea level, this gate once linked Constantinople to the road north-west towards Adrianople (modern Edirne).

• 4
  Topkapi Gate

  The Gate of San Romanus, also known as the Cannon Gate or Topkapı, is the most historically significant point on Theodosian Walls.

• 5
  Comnenus Wall

  A 12th-century defensive wall built by Emperor Manuel I Komnenos, stretching 220 metres from the Theodosian Walls — one of Constantinople's finest examples of military architecture.

• 6
  Anemas Prison

  Situated at the northern end of the Blachernae Walls where they meet the Golden Horn coastal plain, this prison formed a vital link between the final stretches of Constantinople's land defences.

• 7
  Marble Tower (Mermer Kule)

  Marking the southern end of Constantinople's land walls at the Sea of Marmara, this tower — also known as the Tower of Basil and Constantine — served as a bulwark, barracks and prison.

• 8
  Wall of Leon (Blachernae)

  Built by Leo V the Armenian in 813 to counter the Bulgarian threat, this outer wall of the Blachernae double enclosure was later extended southwards by his successor Michael II.