Giannonatti Ranch

The Giannonatti Ranch, in Harding County, South Dakota near Ludlow, includes 10 structures dating from around 1900. A 2 acre portion of the ranch was listed on the National Register of Historic Places in 1987.

It is located on the south side of an east-west section road about 6 mi east of Ludlow.

Six of the structures are contributing buildings, one is a contributing structure, the rest were deemed not to contribute to the historic character of the property.