The Greater Penobscot Building, commonly known as the Penobscot Building, is a skyscraper and class-A office building in downtown Detroit, Michigan. The 1928 Art Deco building is located in the heart of the Detroit Financial District. The Penobscot is a hub for the city's wireless Internet zone and fiber-optic network.
The Penobscot has 2 basement floors, and 45 above-ground floors, for a total of 47. Although the Penobscot Building has more floors than One Detroit Center (45 above-ground floors compared to One Detroit's 43), One Detroit's floors and spires are taller, with its roof sitting roughly 60 feet taller than Penobscot's.