Iraqis on Sunday laid the cornerstone in rebuilding Mosuls Al-Nuri mosque and leaning minaret, national emblems destroyed last year in the ferocious battle against the ISIS terrorist group. The famed 12th century mosque and minaret, dubbed Al-Hadba or "the hunchback," hosted Abu Bakr al-Baghdadis only public appearance as ISIS chief, when he declared a self-styled "caliphate" after the jihadists swept into Mosul in 2014, said AFP on Sunday. The structures were ravaged three years later in the final, most brutal stages of the months-long fight to rid Iraqs second city of ISIS. On Sunday, dozens of government officials, religious figures, United Nations representatives and European ambassadors gathered in the large square in front of the battered mosque to see the foundation laid. Abu Bakr Kenaan, the head of Sunni Muslim endowments in Nineveh province, set down the stone in a simple ceremony. It bore a black Arabic inscription: "This cornerstone for the rebuilding and restoration of the Al-Hadba minaret and the Great Al-Nuri Mosque was laid on December 16, 2018." More than a year after ISIS lost control of Mosul, the iconic mosque still lies in ruins. The stone gate leading up to its courtyard and the greenish dome now covered in graffiti are virtually the only parts still erect. All that is left of the minaret is part of its rectangular base, the rest of it sheared off by fighting. Kenaan told AFP remnants of the minaret would be preserved, while other parts of the mosque would be built afresh, along with a museum about its history and adjacent homes. The five-year project will be financed by a $50.4 million (44.6 million euro) donation from the United Arab Emirates. The first year will focus on documenting and clearing the site, while the next four years will see the physical restoration, the UNs heritage agency UNESCO has said. The mosques destruction "was a moment of horror and despair," said UNESCO Iraq representative Louise Haxthausen. "Today as we lay the foundation stone of the Nuri mosque, we are starting a journey of physical reconstruction," she told those gathered according to AFP. The mosque takes its name from Nureddin al-Zinki, who ordered it built in 1172 after unifying Syria and parts of northern Iraq. Its cylindrical minaret, which featured several levels of ornamental brickwork capped by a small white dome, started listing centuries ago. It is featured on Iraqs 10,000-dinar banknote and gave its name to countless restaurants, companies and even sports clubs. But in June 2014, it became infamous as the site where Baghdadi declared ISISs "caliphate" just days after the terror group seized Mosul in a lightning assault. That capture prompted three years of ferocious fighting to wrest back Mosul and other Iraqi cities overrun by ISIS. In June 2017, as Iraqi forces closed in on a shrinking ISIS-held pocket in Mosuls Old City, the terrorists blew up both the Al-Nuri mosque and its leaning minaret. ISIS itself blamed a US-led strike for the destruction. When the rest of the Old City fell back under state control, Iraqi forces celebrated at the mosque, holding ISISs black flag upside down and tauntingly calling out, "Where is Baghdadi?"