The document discusses Chicago's use of the Federal Historic Preservation Tax Credits program. It notes that from 2002-2016, Chicago topped all other major cities with $2.48 billion in rehabilitation expenditures using the credits, over $400 million more than second place St. Louis. Examples are given of preserved buildings in downtown Chicago that were redeveloped using the credits. The majority of projects outside downtown Chicago focused on affordable housing and mixed-use developments to revitalize communities while preserving cultural identity.