Hopetoun House's East Wing represents William Adam's architectural masterpiece and provided the primary exterior view of the Duke of Sandringham's residence in Outlander, embodying the pinnacle of 18th-century Scottish aristocratic architectural achievement and European sophistication. This magnificent wing, featuring Adam's bold Palladian facade with Baroque elements, sweeping flanking wings, elegant Corinthian columns, and ornate pediments, demonstrates the Hope family's ambition to create a European-style palace that could compete with Continental aristocratic residences. The East Wing's transformation of the house from 13 to 17 bays represents the most imaginative Scottish architectural work of its period, perfectly embodying the architectural grandeur expected of the Duke of Sandringham's residence. The wing's sophisticated design, completed by Adam's sons after 1748, showcases the international architectural influences and cultural sophistication that wealthy Scottish aristocrats employed to demonstrate their political importance and social status within 18th-century European aristocratic society.