Established by John Water Riggs, the Riggs Arboretum at Waterloo is perhaps the oldest and least known arboretum west of the Mississippi River.
The property is in essence a large (10 acre) grove of trees, most ranging in age from 75 to 100+
The Kingman County Courthouse is also on the National Register and is worth a look. The stairs are massive, like many of the old courthouses, but these are really different. The railings are made of one piece of limestone that's probably close to 20 feet long and at least 12 to 18
Kingman State Fishing Lake and Byron Walker Wildlife Area are located on U.S. Highway 54 seven miles west of Kingman, in the valley of the South Fork of the Ninnescah River. The area encompasses 4,529 acres, including the 144-acre Kingman State Fishing Lake.