The Underground House in Ward, Colorado, was a subterranean dwelling known for its architectural design, which embraced the concept of underground living. The house was designed by architect  Julian "Jay" Swayze (1923–1981) in the 1960s. The dwelling is an example of an unconventional approach to residential construction and integration with the natural environment. It was included in the Underground World Home exhibit at the 1964 New York World's Fair.