On both sides of the pier there is a wide sandy beach. On the sides of the Bohaterów Monte Cassino Street there are countless shops, cafés and restaurants. A well renowned Sopot Forest Opera has 4500 seats. In the summer months many performances, musicals and musical festivals are held here. To the east of Gdańsk only a narrow stripe of land separates the Vistula Lagoon from the Baltic Sea. The Vistula Sandbar belongs in part to Poland and in part to the Kaliningrad District (Russia). On the isthmus there are some really impressive beaches. The reed on its southern side nests rare water bird species.