الباب العالي
Another settlement on the Sarayburnu, named Lygos, was founded by Thracian tribes between the 13th and 11th centuries BC, along with the neighbouring Semistra, which Pliny the Elder had mentioned in his historical accounts. Only a few walls and substructures belonging to Lygos have survived to date, near the location where the famous Topkapı Palace now stands. During the period of ancient Byzantium, the Acropolis used to stand where the Topkapı Palace stands today.