Moscow’s Sheremetyevo and Domodedovo airports and St Petersburg’s Pulkovo Airport are all served by numerous international flights. All airports are connected with their respective cities by regular and efficient public transport. Besides being the main hub for all domestic trains, including the trans-Siberian ones, Moscow is served by trains from Rīga, Tallinn, Warsaw, Berlin and Budapest, while European train routes into St Petersburg include arrivals from Helsinki, Rīga and Vilnius. Train stations in both Moscow and St Petersburg are well connected to the metro; all Moscow’s “vokzals” (train stations) link to a stop on the (brown) circle line. The most convenient way to come to St Petersburg for travellers coming from the Baltic States may be by bus, as they are more frequent than trains. Ferries into St Petersburg from Helsinki and Tallinn arrive at the Vasilyevskiy Island ferry terminal.