Imam hadi and Imam Askari holy shrine

Al-Askari Shrine, the 'Askariyya Shrine, or Al-Askari Mosque is a Shia Muslim mosque and mausoleum in the Iraqi city of Samarra 125 km from Baghdad. It is one of the most important Shia shrines in the world. It was built in 944. The dome was destroyed in a bombing by Sunni extremists in February 2006 and its two remaining minarets were destroyed in another bombing in June 2007, causing widespread anger among Shias and instigation of the Iraqi Civil War between the country's Shia and Sunni factions. The remaining clock tower was also destroyed in July 2007. The dome and minarets were repaired and the mosque reopened in April 2009.

The 10th and 11th Shī'īte Imams, 'Alī al-Hādī and his son Ḥasan al-'Askarī, known as al-'Askariyyayn, are buried in the shrine. Housed in the mosque are also the tombs of Ḥakīma Khātūn, sister of 'Alī al-Hādī; and Narjis Khātūn, the mother of Muḥammad al-Mahdī.

Source: Wikipedia