Coat of arms of Kiel, Germany

Kiel (/kiːl/ KEEL, German: [kiːl] ) is the capital and most populous city in the northern German state of Schleswig-Holstein. With a population of around 250,000, it is Germany's largest city on the Baltic Sea. It is located on the Kieler Förde inlet of the Bay of Kiel and lies in the southeast of the Jutland Peninsula, on the mouth of the Schwentine River, approximately 90 kilometres (56 mi) northeast of Hamburg. The world's busiest artificial waterway, the Kiel Canal, has a terminus in Kiel's Holtenau district. This canal connects the Baltic to the North Sea, with its other end in Brunsbüttel. Most of Kiel is part of Holstein. The boroughs north of the Schwentine also belong to Wagria, while those north of the Kiel Canal are historically part of Southern Schleswig. Kiel is one of Germany's major maritime centres, known for a variety of international sailing events, including the annual Kiel Week, which is the biggest sailing event in the world. Kiel is also known for the Kiel Mutiny, when sailors refused orders to prepare to engage the British Navy in the last weeks of World War I, sparking the German Revolution, which led to the abdication of the Kaiser and the formation of the Weimar Republic. The Olympic sailing competitions of the 1936 and the 1972 Summer Olympics were held in the Bay of Kiel. Kiel has also been one of the traditional homes of the German Navy's Baltic fleet, and continues to be a major high-tech shipbuilding centre. The University of Kiel, founded in 1665, is home to the GEOMAR – Helmholtz Centre for Ocean Research Kiel. Kiel is an important sea transport hub, with passenger ferries to Sweden, Norway, Lithuania and other countries. Moreover, today the Port of Kiel is a popular destination for cruise ships touring the Baltic Sea. Kiel's recorded history began in the 13th century. Before then, in the eighth century, it was a Danish village. Until 1864 it was administered by Denmark in personal union. In 1866 the city was annexed by Prussia and in 1871 it became part of Germany. Kiel was one of the founding cities of the original European Green Capital Award in 2006. In 2005 Kiel's GDP per capita was €35,618, which is well above Germany's national average, and 159% of the European Union's average.