Arap Mosque

Arap Mosque is a mosque in the Karaköy quarter of Istanbul, Turkey. The building was originally a Roman Catholic church erected in 1325 by the friars of the Dominican Order, near or above an earlier chapel dedicated to Saint Paul in 1233. Although the structure was altered during the Ottoman period, it is the only example of medieval religious Gothic architecture remaining in Istanbul.

The church was converted into a mosque by the Ottomans between 1475 and 1478, during the reign of Sultan Mehmed II, and became known as the Galata Mosque. It was later given by Sultan Bayezid II to Muslim refugees from Al-Andalus who escaped the Spanish Inquisition in 1492 and settled in the Galata neighborhood of Istanbul.

Source: Wikipedia