Timeline of Hagia Sophia 360 – Inauguration of Hagia Sophia, under the rule of Constantius II. 404 – The original roof was destroyed in a fire. 415 – Hagia Sophia was restored and rededicated by Theodosius II. 532 – Hagia Sophia was burned down once again. The structure was completely destroyed alongside various other churches. After a mere 93 days, construction of the Hagia Sophia began. 537 – The reconstruction was completed with the lavish decorations and ornaments 553 – An earthquake shook Hagia Sophia, weakening the crown of Eastern arch. 558 – Another earthquake hit, causing a break between the two halves. A few months after, the main dome collapsed alongside the eastern semidome. This caused the destruction of the ambo, ciborium, and the Holy Table. 562 – Reconstruction was completed. 726 – Hagia Sophia was stripped of religious illustrations and sculptural work. 842 – St Sophia was finally re-installed. Commencing the redecoration of Hagia Sophia. 859 – A great fire damaged the Hagia Sophia. 869 – An earthquake caused a half dome to collapse. 989 – Another massive earthquake caused the collapse of the western dome. 994 – Hagia Sophia was reopened after reconstruction took place. 1204 – Hagia Sophia became a Roman Catholic Cathedral. 1261 – Hagia Sophia was converted to an Orthodox Church again. 1344 – An earthquake caused severe damage throughout the striation 1346 – Various parts of the building collapsed and the church was closed. 1354 – Hagia Sophia reopened after construction. 1453 – Following the fall of Constantinople, Mehmed the Conqueror orders the conversion of Hagia Sophia into a mosque. Τhe Divine Service in Hagia Sophia at the time of the Salvation was interrupted. 1573 – The exterior was significantly strengthened and altered to follow the customary mosque appearance. 1717 – Renovations on the interior began. 1734 – Hagia Sophia had additions to restorations, such as the building of a library and a Quranic School. 1847 – The structure underwent another restoration 1849 – The mosque was reopened. 1919 – Τhe Divine Service in Hagia Sophia, which had been interrupted after the Salvation in 1453, was continued and completed by a Greek military priest. 1935 – the building was transformed into a museum.