The castle was built between 1858 and 1867 as a birthday present by King George V of Hanover (reigned 1851–1866) to his wife, Marie of Saxe-Altenburg. Between 1714 and 1837 there had been virtually no royal court in Hannover as the House of Hannover had ruled the kingdoms of Hannover and Britain by personal union, and so the Castle was also built to serve as a suitable summer seat for the House of Hannover in Germany, besides the Royal Leine Palace and Herrenhausen Palace in Hannover.
KingCrimson03 says
The castle was built between 1858 and 1867 as a birthday present by King George V of Hanover (reigned 1851–1866) to his wife, Marie of Saxe-Altenburg. Between 1714 and 1837 there had been virtually no royal court in Hannover as the House of Hannover had ruled the kingdoms of Hannover and Britain by personal union, and so the Castle was also built to serve as a suitable summer seat for the House of Hannover in Germany, besides the Royal Leine Palace and Herrenhausen Palace in Hannover.