The Ajlun Archaeological Museum was established in 1993, inside one of the halls of the Ajlun castle. The castle, on the west side of the city, was built in 1184 by ‘Izz al-Din Usama ibn Munqidh’ a commander and nephew of Salah al-Din al-Ayyubi (Saladin).

Archaeological investigations in the Ajlun district are limited. During the past few years they concentrated on surveys with limited excavations at Wadi al-Yabis and Wadi ‘Ajlun-Kufrenjeh, in addition to the excavations at Tell Abu Sarbut in the northern Jordan Valley.

The showcases at the Ajlun Archaeological Museum contain exhibits from the following periods:

• The pre-pottery Neolithic A (8300-7300 BC): various flint tools including microliths, worked bone including needles and borers, and basalt objects. These finds came from the 1991 excavations at ‘Iraq ad-Dubb to the northeast of Ajlun.
• The Early Bronze Age (2300-1900 BC): pottery vessels from salvage excavation at various sites in the district.
• The Byzantine period: pottery vessels from the excavation of the Khirbet Mahrama cemetery.
• The Islamic periods (Ayyubid-Mameluk): a collection of pottery vessels, lamps and sugar pots, copper and bronze tools and grinding stones, in addition to several Arabic inscription found in the Ajlun Castle.