One of the most important places of tourism in Al-Ahsa, a huge fortress built by the Ottomans on an area of 16500 m to protect and fortify the city against attacks during their control over a number of Saudi territory until the success of King Abdul Aziz Al Saud in 1913 to storm the fort and control it into a tourist attraction later Of the most important landmarks of Al-Ahsa Saudi Arabia.
It features a palace and a religious-style mosque with arches and domes enclosed by huge towers reflecting the military style of the building.
