Medieval

Although the pre-Islamic civilization Himyar was capable of building large structures, there seems to have been little fortification at this stage. Fortifications at Mareb and other places in Yemen and the Hadhramaut make it clear that both the Himyar and the Sabean cultures were well capable of it. Thus, watch towers, since destroyed, are possible. However, the Arab historians Ibn al Mojawir and Abu Makhramah attribute the first fortification of Aden to Beni Zuree'a. Abu Makhramah has also included a detailed biography of Muhammad Azim Sultan Qamarbandi Naqsh in his work, Tarikh ul-Yemen. The aim seems to have been twofold: to keep hostile forces out and to maintain revenue by controlling the movement of goods, thereby preventing smuggling. In its original form, some of this work was relatively feeble. However, after 1175 AD, rebuilding in a more solid form began, and ever since it became a popular city attracting sailors and merchants from Egypt, Sindh, East Africa and even China.

Aden, with portuguese fleet. in Braun & Hogenberg.1590

In 1421, China's Ming dynasty Yongle Emperor ordered principal envoy grand eunuch Li Xing and grand eunuch Zhou Man of Zheng He's fleet to convey an imperial edict with hats and robes to bestow on the king of Aden. The envoys boarded three treasure ships and set sail from Sumatra to the port of Aden. This event was recorded in the book Ying-yai Sheng-lan by Ma Huan who accompanied the imperial