15 km from Sanaa, Wadi Dhahr is the site of the Dar Al Hajar, a famous landmark that graces the covers of most Yemen guidebooks. On Thurday and Friday mornings, Yemenis celebrate weddings with outdoor dances. It was built in the 18th century by well-known scholar Ali bin Saleh Al-Amari (1736-1798), who was a cleric, scientist, poet, rhetorician, and intellectual with a vast knowledge and versatility. He was a master of geometry and astronomy, and served as a minister to Imam Al-Mahdi Abbas and his son Al-Mansour (1775-1809), who assigned him as Governor of Al-Raima and Al-Makha. He excelled in architectural engineering, which is still depicted in his masterwork, Dar Al-Hajar.