Cassia County Idaho has 7 places on the National Register of Historic Places including 1 place of National significance and 4 places of Statewide significance. Significant places include City of Rocks, Albion Normal School Campus, Cassia County Courthouse, Granite Pass and Oakley Historic District.
Some of the country's most noteable architects helped create the Cassia County places including C.W. Watkins and Burton E. Morse. Prominent architectural styles found in Cassia Country are Art Deco, Bungalow/Craftsman and Colonial Revival.