Grant County Kansas has 4 places on the National Register of Historic Places including 3 places of National significance and 1 place of Statewide significance. Significant places include Lower Cimarron Spring, Lower Cimarron Spring (Boundary Increase), Santa Fe Trail-Grant County Segment 1 and Grant County Courthouse District.
Some of the country's most noteable architects helped create the Grant County places including Smith & English and J.M. Fuller. Prominent architectural styles found in Grant Country are Art Deco.