Built in 1904, for a publisher named Walter Blackie. He hired Mackintosh to build him a house but he didn’t want it to look anything like the traditional Scottish architecture. Blackie wanted grey cast walls, other than that he gave Mackintosh freedom to design it. I actually really like this house to me (minus the color) it looks like how all the modern mansions look. The two Switzer mansions south of campus are two that come to mind. I like the squareness with the pillars dividing it. The house has since been donated to National Trust of Scotland and tours are available.