Concrete Interstate Tipis of South Dakota MPS

Summary

The Concrete Interstate Tipis of South Dakota are nine tipi-shaped sculptures located at rest areas along Interstate 90 and Interstate 29 as they pass through South Dakota. Designed by architect Ward Whitwam, they are sometimes colloquially called Whitwam's Wigwams. The sculptures were installed between 1968 and 1979 and have become a symbol of South Dakota tourism and interstate travel. They were collectively listed on the National Register of Historic Places under a multiple property submission in 2015 for their contribution to the state's architectural and cultural landscape.