(Arabic: مَسْجِد جَوَاثَا, romanized: Masjid Jawāthā), also incorrectly spelled Al-Jawan, is located in the historic Jawatha area, about 12 km (7.5 mi) northeast of Hofuf, Al-Ahsa, Saudi Arabia. It was the earliest known mosque built in eastern Arabia. Most of the original structure fell into ruins.[2] However, it was restored in 2007 by the Saudi Commission for Tourism and National Heritage, using a design similar to that of Masmak Fort in Riyadh