St. Petersburg. The very name brings to mind some of Russia’s greatest poets, writers and composers. Pushkin, Dostoevsky, Tchaikovsky. Look over your right shoulder. The massive golden dome of St. Isaac’s Cathedral (圣以撒大教堂) rises above the skyline. You’ll see, too, why St. Petersburg is called a "float city. " Standing there, nearly surrounded by water, you can see four of the city’s 42 islands.