The Arbatsko-Pokrovskaya Line is a line of the Moscow Metro in Russia. It is designated by the color blue on maps and consists of 21 stations. The line runs from the western part of the city at Schabolovskaya to the eastern area at Krasnopresnenskaya. Opened in 1935, the line is one of the oldest in the metro system. It serves as a vital transportation route, connecting various districts and providing access to key locations, including the Arbat district, a popular area for shopping and culture.