The Casino Theatre was built as an entertainment center by Georg Carstensen but was converted into a theatre in 1848. After many years of never gaining popularity, it was closed in 1937 and demolished in 1960.
Denmark becomes a constitutional monarchy. A two-chamber parliament is established.
World War I. Denmark remains neutral throughout the war.
Danish, Norwegian, and North German (especially Schleswig-Holstein): patronymic from the personal name Niels, a reduced form of Nikolaus ( see Nicholas ) or Cornelius .