MOSCOW, RUSSIA: Though bumped from first to 3rd place, Moscow still remains the most expensive city in Europe for expatriates. A dramatic depreciation of the ruble against the US dollar has led to a sharp fall in the city's index score compared to 2008. In general, European cities have see some of the steepest falls in the rankings this year, since their currencies have weakened against the dollar. In February 2008, commuters rush through one of Moscow's metro stations. Some of the stations are elaborately decorated in the city, including mosaics on the walls.