1)How do people usually travel in Russia? 2)Which areas or regions are well-known in Russia? 3)What are they famous for? 4)What are the most important cities in Russia?

as you know, russia is a very big country so, there are a lot of kinds of travelling such as:trains planes,coaches,ferries and others.but most  people prefer travelling by train as it's  cheap and easy. moscow and sant-petersburg are well-known in russia as they're business cities and  capitals of our countries.