This pin from Loungefly's Princess Castle Mystery collection #137476, shows Arendelle, the castle of Elsa and Anna from the "Frozen" series of movies and shorts. The castle has an icy look to it, being primarily in shades of gray-toned blues. It is also semi-symmetrical. Above the entrance to the castle we can see a icicle-looking diamond. Several of the towers also have diamonds above their roofs.