Admiralteyskaya (Russian: Адмиралте́йская) is a station on the Frunzensko-Primorskaya Line of the Saint Petersburg Metro. Opened on 28 December 2011, it is designed to relieve congestion at the Nevsky Prospekt and Gostiny Dvor stations, as well as to provide a more direct link to the Hermitage and other notable museums.
Entry and exit from the station are located at the intersection of Malaya Morskaya Street and Kirpichniy Lane, a one-minute walk from Nevsky Avenue and five minutes walk from Dvortsovaya Square. The station is the best way for tourists and residents of St. Petersburg to visit the central part of the city.
The station is connected to the ground with two consecutive escalators. Since it is very difficult to build escalators longer than 125 meters, it was decided to build one long escalator (125 meters) to the intermediate level. From this level, a shorter (25 meters) escalator leads to the station. The total depth of the station is 86 meters which makes it the deepest metro station in Saint Petersburg.
The Admiralteyskaya station has total of four parallel escalators each with a rise of 68.6 meters, containing 770 steps.
According to Wikipedia