The New Mosque and later New Valide Sultan Mosque after its partial reconstruction and completion between 1660 and 1665, is an Ottoman imperial mosque located in the Eminönü quarter of Istanbul, Turkey. It is situated on the Golden Horn, at the southern end of the Galata Bridge, and is a notable Istanbul landmark marking the crossing from the old historic core of the city to the Beyoğlu (Pera) district. The mosque is a notable example of the Sultanate of Women period in Ottoman Empire.