two biggest islands Rügen and Usedom, but also a number of smaller islands such as Hiddensee and Poel. Mecklenburg-Vorpommern's varied coastline also has many peninsulas such as Fischland-Darß-Zingst and various lagoons (also known as Bodden or Haff). A total of 283 nature reserves, 110 landscape reserves and three of Germany's fourteen national parks are scattered all over the state. Lakes The southern part of the state is characterized by a multitude of lakes within the Mecklenburg Lakeland, the largest of which is Lake Müritz (also the largest German lake), followed by Lake Schwerin, Plauer See and Lake Kummerow. The "land of a thousand lakes" (German: Land der tausend Seen) is hallmarked by its unspoilt nature. Due to its clean air and idyllic setting, medical tourism has become a notable tourism sector in the region. National parks Culture Over the centuries, Mecklenburg and Vorpommern have developed and maintained strong regional cultures. It can generally be described as North German and has similar linguistic and historic characteristics to other north German states, such as Schleswig-Holstein. People in Vorpommern, as a result of that territory being a former province of Prussia, tend to look slightly more towards Berlin and Brandenburg than people in Mecklenburg would. Architecture The cities are characterised by a certain "Hanseatic" style also found in other parts of northern Germany (e.g. Lübeck) as well as in countries bordering the Baltic Sea like Estonia (e.g. Tallinn) or Latvia (e.g. Riga). A common feature of many towns in Mecklenburg and Vorpommern are red Brick Gothic churches and houses dating back to the Middle Ages. Also stepped and tailed gables are a typical feature of the Hanseatic old towns, such as Stralsund, Wismar and Greifswald. The old towns are usually built around one or several market places with a church or the town hall. Often towns were founded at the Baltic Sea, one of the many lakes or a river for logistical and trade motives. Rural areas of Mecklenburg-Vorpommern are often characterized by Brick Gothic village churches and agricultural heritage, like brick homesteads, thatched roof houses, windmills, manor houses and castles. Museums, art and theatres The largest publicly funded theatres in the state are the Mecklenburg State Theatre, the Rostock People's Theatre, the Theatre of West Pomerania, with venues in Stralsund, Putbus and Greifswald, and the Mecklenburg State Theatre of Neustrelitz with venues in Neubrandenburg and Neustrelitz. All four theatres offer both drama