After years of restoration, the ninth-century Qarawiyyin library in north-eastern Morocco is finally set to reopen... This, it is widely believed, is the oldest library in the world... The iron door is found along a corridor that once linked the library with the neighbouring Qarawiyyin Mosque...Inside it were kept the most prized tomes in the collection; works of such immense import that each of the four locks had separate keys held with four different individuals, all of whom had to be present for the door to be opened. The restored library boasts a new sewerage and underground canal system to drain away the moisture that had threatened to destroy many of its prized manuscripts – plus an elaborate lab to treat, preserve and digitise the oldest texts. A special room with strict security and temperature and humidity controls houses the most ancient works. The most precious is a ninth-century copy of the Qur’an, written in ornate Kufic script on camel skin. The library’s restoration comes at a time when extremists are rampaging the region’s heritage. Across Syria and Iraq, the militants of the Islamic State have carried out cultural atrocities that include ransacking the great library of Mosul, burning thousands of manuscripts, bulldozing ancient Assyrian cities like Nimrud and Hatra in Iraq, blowing up the Temple of Bel in Palmyra and sacking the oasis city’s museum, in addition to destroying tombs and mausoleums of Shia and Christian saints. The Qarawiyyin library was also founded by a woman. In the ninth century, Fatima al-Fihri, the daughter of a wealthy merchant from Tunisia’s Kairouan, arrived in Fez and began laying the groundwork for a complex that would include the library, the Qarawiyyin Mosque, and Qarawiyyin University, the oldest higher education institution in the world – with alumni including the Jewish philosopher Moses Maimonides, the great Muslim historian Ibn Khaldun, and the Andalusian diplomat Leo Africanus. The library is expected to be reopened for visitors later this year after an initial target of summer 2016, and then September, slipped by. No definite date has been set, but the architects remain confident it will happen before 2017.