One Detroit Center is a skyscraper and class-A office building located downtown which overlooks the Detroit Financial District. Rising 619 feet (189 m), the 43-story tower is the tallest office building in Michigan, and the second tallest building overall in the state behind the central hotel tower of the Renaissance Center, located a few blocks away. Although the Penobscot Building has more floors (45 above-ground floors compared to 43), One Detroit Center's floors are taller, with its roof sitting roughly 60 feet (18 m) taller than Penobscot's.