“Cordova is a city in south Spain. Muslims armies invaded Spain in 711, massacring countless people. Then they converted the biggest church in Cordova into a mosque.
“Building mosques over churches, synagogues and temples of the conquered people began during the life of Muhammad who converted the temple of the Arabs in Mecca into an Islamic mosque.
“Muslims have been doing the same ever since. Numerous Hindu temples, churches, synagogues and Zoroastrian temples were converted into mosques. The objective is twofold” To humiliate the defeated people and to establish the supremacy of Islam.
“The mosque over the temple of Solomon in Jerusalem is one example. When Muslims conquered the Byzantine Empire they converted the biggest church in the Christian empire into a mosque. In India over 2000 mosques are built on Hindu temples.”
http://www.faithfreedom.org/articles/jihad-articles/ali-sina-on-ground-zero-mosque-cordova-house/