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 an notable example of the Sultanate of Women period in Ottoman Empire.

Eminönü, historically known as Pérama, is a predominantly commercial waterfront area of Istanbul within the Fatih district near the confluence of the Golden Horn with the southern entrance of the Bosphorus strait and the Sea of Marmara. It is located in the part of Istanbul known as the historical peninsula, connected to Karaköy via the Galata Bridge across the Golden Horn. It was administered as part of the Sultanahmet district from 1928 to 2009 when Sultanahmet was absorbed into Fatih. Eminönü, which was a district municipality until March 7, 2008, was abolished on this date and connected to Fatih district by law. It is completely located within the city wall, the historical core of the city, and forms one of the most vibrant areas of the central area.