Detmold (ˈdɛtmɔlt) is a city in North Rhine-Westphalia, Germany, with a population of . It was the capital of the small Principality of Lippe from 1468 until 1918 and then of the Free State of Lippe until 1947. Today it is the administrative center of the district of Lippe and of the Regierungsbezirk Detmold. The Church of Lippe has its central administration located in Detmold. The Reformed Redeemer Church is the preaching venue of the state superintendent of the Lippe church. About to the southwest of Detmold is the de hill with a prehistoric circular rampart and the Hermann monument (Hermannsdenkmal). The monument commemorates the so-called Battle of the Teutoburg Forest, a battle in 9 AD which may or may not have been fought close to the present location of Detmold. In this encounter, Germanic tribes led by Hermann (Arminius) defeated Roman legions under the command of Publius Quinctilius Varus. Detmold was first mentioned as Theotmalli in 783, the year of a battle between the Saxons and Charlemagne's forces nearby. This was an event in the Saxon Wars. In 1005 a Tietmelli or Theotmalli region (Gau) is referred to in documents. In 1263, Bernard III of Lippe fortified the settlement at the crossing of the trade route from Paderborn to Lemgo over the Werre River with stone walls and granted it a municipal charter. Its population was reported in 1305 as 305. Market rights granted in 1265 led to rapid economic development. Its defenses were greatly strengthened after severe damage had been inflicted on the town during the conflict with Soest in 1447. A major fire in 1547 destroyed more than 70 houses. In 1550, Detmold became the permanent residence of Count Simon III of Lippe. The counts were elevated to princes in 1789, and Detmold remained the capital of the small Principality of Lippe until the end of the World War I in 1918, when all princely states in Germany were abolished. Today, Stephan, Prince of Lippe is the owner of Detmold Castle. Street lighting was introduced in 1809, with oil-fired lanterns.