This T1 route goes from the district of Bağcılar which is a bit west north part of the city to Zeytinburnu, then parallel the shore of Sea of Marmara north east through the Byzantine city walls at Topkapı (the Cannon Gate, not the palace), then eastward via Yusufpaşa/Aksaray, then past the Grand Bazaar (Kapalı Çarşı) and along Divan Yolu to Sultanahmet—the Hippodrome—the historic centre of Old İstanbul.