The current seat of the Chief of the Campbell clan is a smart, grayish-green turreted stone house with a self-satisfied air. Set among well-tended grounds, it contains displays of luxurious furnishings and interesting art, as well as a huge armory. Built between 1743 and 1789, the castle has spires on the four corner turrets that give it a vaguely French look. Fans of Downton Abbey will recognize it as the fictional Duneagle Castle of Season Three's finale. Tours of the castle follow the history of the powerful Campbell family and how it acquired its considerable wealth. There is a tearoom for snacks and light lunches. You can hike around the extensive estate grounds, but wear sturdy footwear.