Unbuilt Victoria celebrates the city that is, and laments the city that could have been. For most people, resident and visitor alike, Victoria, British Columbia, is a time capsule of Victorian and Edwardian buildings. From a modest fur-trading post of the Hudson’s Bay Company it grew to be the province’s major trading centre. Then the selection of Vancouver as the terminus of the transcontinental railway in the 1880s, followed by a smallpox epidemic that closed the port in the 1890s, resulted...