The story
In the Middle Ages, when Denmark was divided into syssels, Lyngby-Taarbæk was part of Østersyssel. It later became a part of Copenhagen Fief, which was changed to Copenhagen County in 1661. Although Copenhagen County changed many times over the years, Lyngby-Taarbæk always remained within the borders. When the counties were disestablished in 2007, Lyngby-Taarbæk came under the new Capital Region of Denmark.
Since 1842, and until the 1970 Danish Municipal Reform, Lyngby-Taarbæk was a parish municipality. It became a regular municipality with the 1970 reform, and its borders have remained unchanged since. Lyngby-Taarbæk wasn't merged with any other municipality in the 2007 municipal reform.
From Wikipedia’s article on Lyngby-Taarbæk Municipality, shared under CC BY-SA 4.0.5
