This construction, in the Venetian style has been copied from the famous Lazaretto Gate of Candia designed by Michael Sammicheli at the beginning of the 16th century, and consists of a vaulted passage through the earthwork rampart of the city with a carefully executed spherical dome, eleven metres (36') in diameter, in its centre.
The external doorway of the Porta Giuliana is a small archway in the re-entering angle or "orecchione" of the Caraffa bastion now somewhat injured by breakage of the arch stones, and the ancient doors, etc., are missing.
[2] During the early Ottoman period, only Turks were allowed to pass through the gate on horseback, while Christians and foreigners were obliged to walk.
[citation needed] The gate was locked at sunset and reopened at sunrise and remained closed on Fridays, the Muslim holy day, to allow the guards time to pray.
[citation needed] During British Colonial times the spacious rooms of the gate served as a warehouse for fuel and other materials.