Grand Duchy of Mecklenburg-Schwerin
The Berlin–Hamburg line, opened in 1846, was the first railway passing through the Grand Duchy of Mecklenburg-Schwerin. Immediately afterwards Mecklenburg-Schwerin began work on a link from Hagenow to Schwerin, which was opened on 1 May 1847. On 12 July 1848, the line was extended to Wismar. In 1850, the Bad Kleinen–Rostock line was opened from Bad Kleinen station to Rostock.