Conspicuous in the center of town are the stone walls of MacLellan's Castle, a once-elaborate castellated mansion dating from the 16th century. You can walk around the interior, although the rooms are bare. The "Lairds Lug," behind the fireplace, allowed the laird (lord) to listen in to what his guests were saying about him. You can also get a glimpse of life below stairs in the Vaults. There are lovely views over the town from the windows.