The Second World War battery near Alksnynė (also known as defensive fortifications of Kiaulės Nugara island) is a legacy of Nazi Germany. It was intended to protect the city of Klaipeda from the aviation raids. The cannons of the battery, which was the main building of defensive complex, were linked with spacious underground premises. Around this battery, even today, variuos remains of the residencial and serving buildings are preserved. In 2009 another part of the fortifications, the Koch bunker was opened for the visitors.