WDIV-TV, virtual channel 4 (UHF digital channel 32), is an NBC-affiliated television station licensed to Detroit, Michigan, United States. The station serves as the flagship broadcast property of the Chicago-based Graham Media Group subsidiary of Graham Holdings Company. WDIV-TV maintains studio facilities on West Lafayette Boulevard in Detroit. As such, it is the only major television station in the market with offices and studios within the Detroit city limits, while the market's other television stations are based in Southfield (WDIV's transmitter is, however, located on Greenfield Road in Southfield).