Готторп
Frederick Ernest was made a Knight of the Order of the Elephant by his royal brother-in-law. In 1731, he received Gottorf Castle as his seat, the former seat of the Dukes of Schleswig and Holstein at Gottorp. However, he preferred to build his own residence at the site of the manor at Drage, which the king had given to him on the occasion of his wedding with Christine Sophie, the daughter of Duke Ernest Ferdinand of Brunswick-Bevern. The old manor house was demolished and Friedrichsruh Castle was constructed between 1744 and 1751, after a design of the Danish court architect Nicolai Eigtved.