Fort al-Jalali

Fort al-Jalali - Credit: Wikimedia Commons

Al Jalali Fort, or Ash Sharqiya Fort, is a fort in the harbor of Old Muscat, Oman. The fort was built by the Portuguese under Philip I of Portugal in the 1580s on an earlier Omani fortress to protect the harbor after Muscat had twice been sacked by Ottoman forces. It fell to Omani forces in 1650. During the civil wars between 1718 and 1747, the fort was twice captured by Persians who had been invited to assist one of the rival Imams. The fort was extensively rebuilt later. Read more on Wikipedia

type: military installation
date from: 1550

Source: en.wikipedia.org