completed in Detroit in the 1930s. 95 Hines Interests, the property management firm for the building, gives a floor count of 74, 96 while architect Skidmore, Owings and Merrill gives a floor count. "Renaissance Center 400 Tower". Archived from the original. Young Municipal Center 318 / Tallest building completed in the city in the 1950s. "Monroe Blocks development breaks ground in downtown Detroit". 97 Emporis and other building database sites usually give the floor count as 70, 1 98 while other sources state 73 stories. Hawkins Ferry, Hon.I.A. 34.015 Patrick. "Renaissance Center 100 Tower". 3, the Qube in the, detroit Financial District now stands on this site. Source of Skyline ranking information: m diagrams: New York City, Chicago, Miami, Houston, Los Angeles, Dallas, Atlanta, San Francisco, Boston, Las Vegas, Seattle, Philadelphia, Pittsburgh, Jersey City, Minneapolis, Detroit, Denver. This building was constructed as the Book-Cadillac Hotel, but is now officially known as the Westin Book-Cadillac Hotel. "Riverfront Towers - Tower 200". Tallest proposed or under construction edit Tallest Under Construction edit Rank Name Image Height feet / m Floors Year Notes 1 Hudson's Site Development 912 / Will be Detroit's tallest building when completed.