The Interstate State Park CCC/WPA/Rustic Style Historic District at the northeast end of the Minnesota park contains six contributing properties. These consist of three buildings, two structures, and an object. Noteworthy are the women's rest room (built c. 1920) and men's rest room (built 1928), which predate the federal developments and influenced the WPA's use of rustic style in the park. These two buildings are situated at the north end of the parking lot; the men's rest room is noted for its placement relative to the rock outcroppings and the women's rest room was modified by the WPA in 1941. The third contributing building is the 1939 Refectory, originally a concession building renovated in 1981 with restrooms and office space to become the current visitor center. The two contributing structures are the 1937 stone curb in the parking lot and a retaining wall built in 1938 at the south end of the Glacial Gardens. The contributing object is a 1938 water fountain at the south end of the parking lot.