Moscow has been the capital of Russia since the late 15th century. Some sources call this cosmopolitan city “the northernmost and coldest megacity and metropolis on Earth.” The Moscow Kremlin is located in the city center; it is home to the President and the treasures of the Russian Empire in the Armory and Treasury. The Moscow Kremlin is the world’s largest medieval fortress. The Kremlin and Red Square are UNESCO World Heritage sites. St. Basil’s Cathedral, known for its colorful, onion-shaped domes, is located on Red Square. The Novodevichy Convent in south-western Moscow is another UNESCO World Heritage site that is normally seen while on our city-tour. Moscow, with its population of 12,000,000 (official data), is the largest city in Russia and in Europe. According to some sources the real population of Moscow is about 20,000,000 inhabitants, therefore it is among the top ten largest cities of the world. By the way, Moscow claims the largest number of billionaires in the world. Per Forbes, there are 84 billionaires in the city. Another interesting fact about the city is about McDonald’s: the first restaurant there was opened on January 31, 1990 and the line to the restaurant ran for several kilometers.