Great Mosque of Gaza, also known as the Great Omari Mosque, is the largest and oldest mosque in the Gaza Strip, Palestine. The location was originally a site of an ancient Philistine temple that was used later by the Byzantines to erect a church in the 5th century AD. After the Muslim conquest in the 7th century AD, it was transformed into a mosque. The mosque was reconstructed several times by Mamluks and Ottomans in 13th and 16th centuries AD.