Nusretiye Clock Tower, aka Tophane Clock Tower, is a clock tower situated at Tophane, a neighborhood in Beyoğlu district of Istanbul, Turkey, next to Nusretiye Mosque and Tophane Kiosk at the European waterfront of Bosphorus. It was ordered by the Ottoman sultan Abdulmejid I (1823–1861), designed by architect Garabet Amira Balyan and completed in 1848. Designed in neo-classical style, the four-sided, three-story clock tower is 15 m high. A tughra of Sultan Abdülmecid I is installed above the entrance. The original clock and the clock face are in a state of disrepair. The clock tower along with Nusretiye Mosque and the Tophane Kiosk survived the urban renewal and highway construction program of the mid-1950s. However, it remains within the customs warehouse area of Istanbul Port, cut off from public access today.