GUM State Department Store is the large store in the Kitai-gorod part of Moscow facing Red Square. It is currently a shopping mall. Prior to the 1920s, the location was known as the Upper Trading Rows. With the façade extending for 794 ft (242 m) along the eastern side of Red Square, the Upper Trading Rows were built between 1890 and 1893 by Alexander Pomerantsev and Vladimir Shukhov. The trapezoidal building features a combination of elements of Russian medieval architecture and a steel framework and glass roof, a similar style to the great 19th-century railway stations of London.