The New Mosque originally named the Valide Sultan Mosque, and later New Valide Sultan Mosqueafter 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. The mosque is an example of the Sultanate of Women period in Ottoman Empire. The exterior of the mosque itself boasts 66 domes and semi domes in a pyramidal arrangement, as well as two minarets. There is an elegant şadırvan (ablution fountain) stands in the center, but is only ornamental. The actual ritual purifications are performed with water taps on the south wall of the mosque. The façade of the mosque under the porch is decorated with İznik tiles. Stone blocks supplied from the island of Rhodes were used in the construction of the mosque. Like many other Ottoman imperial mosques, on the 4 corners where the dome meets the pillars holding it up, are calligraphic plates with the names of the first four khalifahs, Abu Bakr, Umar, Uthman, and Ali.