Plaza. Now it is called the Roshek Building. On January 15, 2009, IBM announced that it will move into the building, creating a new technology service center with 1,300 employees after improving the building to make it a LEED-certified building The building was placed on the National Register of Historic Places on March 17, 2010. References Buildings and structures completed in 1932 Defunct department stores based in Iowa Economy of Dubuque, Iowa National Register of Historic Places in Dubuque, Iowa Buildings and structures in Dubuque, Iowa Beaux-Arts architecture in Iowa Art Deco architecture in Iowa Department stores on the National Register of Historic Places Commercial buildings on the National Register of Historic Places in Iowa