AL-Ghasham House is one of the most important archaeological and historical monuments in the Al-Ma'awel State, where this house is located in the village of Al-Shali in the town of Afi. It is the home of Mr. Mohammed bin Ahmed bin Nasser Al-Ghamam Al Busaidi, and then it was transferred to Mr. Ahmed Bin Hilal bin Ali Al Busaidi, the father of Al-Mirdas bin Ahmed until the establishment of Al-Ghasham bought and restored it. The museum contains many distinguished and beautiful rooms, receptions hall, some fortified rooms and watch towers, large monsters, well and storage places and also contains inscriptions and monuments. This museum is located in the state of Wadi al-Ma'awal in the southern province of Batinah.