Russia is a vast country that is over 70% larger than Canada, which is the second largest country. Despite its size though, Russia is quite accessible to travellers since the most popular attractions are concentrated in a couple cities.
Moscow is Russia's capital and has been a major political center for decades. It demonstrates Russia's embrace of capitalism and is home to many new buildings and burgeoning skyscrapers. Moscow is also notable for having the most billionaires in the world, due to the vast oil and resource deposits in Russia. The chief sights include the Kremlin complex, the colorful 16th century St. Basil's Cathedral, and Lenin's Mausoleum. All of these are centered around Red Square.
Saint Petersburg is a cosmopolitan European oriented city that has been known as a Window to the West and called the Venice of the North for its palaces and waterways. It is home to the Hermitage, a world-class former Tsarist palace turned museum filled with art.
If those two cities aren't to your liking, you can explore some of this vast cold country via the Trans-Siberian Railway. Spend a week and you can travel from Moscow to Vladivostok, and many places in between.