The castle of Ajloun was built in 1184 by Izzeddin Usama Munqith, the nephew of Saladin.

It's main purpose was to protect the region against the crusaders. Towering above the green forested hills the castle can be seen from miles away. From the top of the castle, fourteen hundred meters above sea level, you can admire the panoramic view over the Jordan Valley. Ajloun castle is one of the best preserved examples of medieval Arab-Islamic military architecture.

The castle's main features are a drawbridge into the main entrance, a fortified entrance gate and several towers.

Inside, the castle is a labyrinth of vaulted passages, winding staircases, long ramps, enormous rooms that served as dining halls, dormitories and stables. The castle hosts a total of 11 water cisterns and the private quarters of the Lord of the Castle.