From the capital of Sana'a to Ma'rib, Aden, Dhale, Hajjah, Hodayda, Sa'ada, Shabwa, and Ta'iz: Mohannad al-Sayani, the Director of Yemen's General Organization of Antiquities and Museums has stated that at least 23 sites and monuments have been severely damaged or destroyed since beginning of the conflict in Yemen. 

ARCA, Archaeology in Yemen and Archaeology in Syria Network are trying to document all of them. 

Site 1: Al-Qahera Castle, Taiz, Yemen  

 قلعة القاهرة, تعز, ال

Al-Qahira Castle(also known as Cairo Castle) is located on the highest mountain in Taiz city. Throughout history it has been a contested site of battles for the rulers who ruled Taiz as the stronghold has both a spectacular vantage point and is a defensive fortress that when occupied by military forces, makes it strategic for the control of the city.

The book "Taiz City, Green Branch in the Arab History", written by previous Taiz Archeological Office's Director Mohammad al-Mujahed, dates the historical construction of the castle back to the Sulaihi State between 426- 532, after Hijrah. This book states that Sultan Mohammad Assulaihi was the ruler who ordered the building of the castle though the dates of origin differ in many historic documents.

Due to its strategic point in this current conflict, the castle was targeted by airstrikes on May 21, 2015 and sustained substantial damage.