Church of the Acheiropoietos
... that the Church of the Acheiropoietos, a UNESCO World Heritage Site in Thessaloniki, was the first Christian church to be converted into a mosque after the Ottoman conquest of the Greek city in 1430?
... that the <b id="mw0w"><a href="./Church_of_the_Acheiropoietos" id="mw1A" rel="mw:WikiLink" title="Church of the Acheiropoietos">Church of the Acheiropoietos</a></b>, a <a href="./World_Heritage_Site" id="mw1Q" rel="mw:WikiLink" title="World Heritage Site">UNESCO World Heritage Site</a> in <a href="./Thessaloniki" id="mw1g" rel="mw:WikiLink" title="Thessaloniki">Thessaloniki</a>, was the first <a class="mw-redirect" href="./Christian_church" id="mw1w" rel="mw:WikiLink" title="Christian church">Christian church</a> to be converted into a <a href="./Mosque" id="mw2A" rel="mw:WikiLink" title="Mosque">mosque</a> after the <a href="./Ottoman_Empire" id="mw2Q" rel="mw:WikiLink" title="Ottoman Empire">Ottoman</a> <a href="./Siege_of_Thessalonica_(1422–1430)" id="mw2g" rel="mw:WikiLink" title="Siege of Thessalonica (1422–1430)">conquest</a> of the Greek city in 1430?