Old City of Sanaa
…Heritage Site by the United Nations in 1986. Efforts are underway to preserve some of the oldest buildings some of which, such as the Samsarh and the Great Mosque of Sanaʽa, is more than 1,400 years old. Surrounded by ancient clay walls that stand 9–14 metres (30–46 ft) high, the Old City contains more than 100 mosques…