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+
Among the really historical relics of Kingman which is seen perhaps most often, and appreciated for its historical value, is the Library Clock, over 100 years old. The old clock kept time in Peter Miller'
Completed in 1888, the building was originally the Kingman City Hall, fire department, and city jail. The two-story Renaissance-style structure is 150 feet by 25 feet of Kingman red brick and native limestone.