per winkipedia, "In 1687 the Parthenon suffered its greatest blow when the Venetians attacked Athens, and the Ottomans fortified the Acropolis and used the Parthenon as a powder magazine. On September 26 a Venetian shell exploded the magazine and the building was partly destroyed. The internal structures were demolished, whatever was left of the roof collapsed, and some of the pillars, particularly on the southern side, were decapitated. The sculptures suffered heavily. Many fell to the ground and their pieces were later made souvenirs. After this the building fell into disuse"
But then again it's the modus operandi for the Muslims to hide in mosques, churches and behind their mother's skirts!!
I think the restoration of Agia Sophia would be an excellent litmus test.