The Russian capital of Moscow is built on the Moskva River. The city can be warm in summer, but the temperature is around -10 degrees Celsius in winter. Major attractions in Moscow include Red Square, St Basilâ€™s Cathedral, Leninâ€™s Mausoleum and the Kremlin. The Tretyakov Gallery and State Historical Museum are also in the city. British Airways fly from London Heathrow to Moscow. Flight time is around three and a half hours.