The Golden Gate or Porta Aurea Istanbul

There are the remains of a partial outline of the Byzantine gate Porta Aurea ( Golden Gate or Altinkapi in Turkish ) at Yedikule which once accessed the road of Via Egnatia .  

History

Originally, it was a tripartite monument arch that was built in  celebration of Emperor Theodosius I’s victory over Magnus Maximus in 388, and in 408 Theodosius II had it incorporated into the surrounding walls.  It was covered in statues and inscriptions, the original gates were gold-plated, hence their Latin name, and were far more impressive that what you see today.  
The gates were only ever opened after a victory or when the emperor and his generals would parade through them.  The gate remained in use until 1216 when Emperor Michael VIII Palaeologos rode through to celebrate his return to power and for ousting the Fourth Crusaders from Istanbul after which the arch was sealed for good.

Location

Golden Gate is located in Yedikule in Fatih .