The Carbide & Carbon Building is a Chicago landmark located at 230 N. Michigan Avenue. The building, which was built in 1929, is an example of Art Deco architecture. It was designed by Burnham Brothers. The Carbide and Carbon Building was originally home to the regional office of Union Carbide and Carbon Co., which later became Union Carbide Corp. The skyscraper was designated a Chicago Landmark on May 9, 1996. Built as a high-rise office tower, the Carbide & Carbon Building was transformed more recently into the Hard Rock Hotel Chicago; work on the renovation began in 1998 and was completed in 2004. The conversion was directed by Lucien Lagrange & Associates.