Ferry connections to Tallinn, Mariehamn, and Stockholm are serviced by various companies; very popular MS ''J. L. Runeberg'' ferry connection to Finland's second oldest city, medieval old town of Porvoo, is also available for tourists. Finnlines passenger-freight ferries to Gdynia, Poland; Travemünde, Germany; and Rostock, Germany are also available. St. Peter Line offers passenger ferry service to Saint Petersburg several times a week.