Nearly every Omani city and town has its own fort. Most of them were built or had major expansions during Al-Yarubi dynasty rule of Oman in between 1624 and 1744. They represent the fine Omani architecture and prosperity at that time. In times of war and with high and thick walls, their purpose was as a refuge for the people and a last line of defense for the town. Forts were prepared to withstand long siege with water wells, food storing capacity and secret tunnels ending many kilometers away from the walls of the fort. In times of peace they served as a centre of governance, a place for education and a social interaction point. The list is long but here are some of the well-known names: Al-Jalali Fort, Al-Mirani Fort, Nakhal Fort, Rustaq Fort, Sohar Fort, Nizwa Fort, Bahla Fort, Qurayat Fort, Khasab Fort, Al-Hellah Fort, Al-Khandaq Fort, As-Suwaiq Fort, Barka Fort, Bait An-Nuaman, Al-Hazm Fort, Ibri Fort, Bait Ar-Radaidah, Jibrin Fort, Al-Muntarib Fort, As-Sunaisilah Fort, Bilad Sur Fort, Ras al-Hadd Fort, Mirbat Fort, Sadah Fort and Taqa Fort.