Grant-Deneau Tower is a New Formalist and Miesian style building constructed by developers Richard Grant and Paul Deneau in 1969. At the time, it was Dayton’s tallest skyscraper and first modern office tower. Its lobby enclosure was completed in 1979. Because it was built as part of an effort to revitalize downtown Dayton, the Grant-Deneau Tower was added to the National Register of Historic Places in 2016 despite the customary fifty-year age minimum for historic sites.
As of 2018, the Grant-Deneau Tower is entirely vacant, though various real estate groups have expressed interest in renovating the property.