Chicago Landmark is a designation of the Mayor of Chicago and the Chicago City Council for historic buildings and other sites in Chicago, Illinois. Listed sites are selected after meeting a combination of criteria, including historical, economic, architectural, artistic, cultural, and social values. Once a site is designated as a landmark, it is subject to the Chicago Landmarks Ordinance, which requires that any alterations beyond routine maintenance, up to and including demolition, must have their permit reviewed by the Landmarks Commission. Many Chicago Landmarks districts, sites, buildings, structures, and objects worthy of preservation by the National Park Service have been listed on the National Register of Historic Places, providing federal tax support for preservation, and some have been designated with National Historic Landmark status by the United States Secretary of the Interior for historical significance, providing additional federal oversight.

In Chicago, the historic preservation movement initially sought to ensure the survival of individual buildings of special significance. However, the movement has evolved to include districts and neighborhoods and even encompasses distinctive areas of the natural environment. In 1957, Chicago City Council 5th ward Alderman Leon Despres began the landmark preservation movement in Chicago, by adopting the Frank Lloyd Wright Robie House. This led to the formation of the City Landmarks Commission, who chose 39 buildings as "honorary" landmarks. That body evolved into the present Commission on Chicago Landmarks which was empowered by Despres's 1968 city ordinance to select and protect 12 important buildings as the inaugural official Chicago Landmarks. The efforts spawned the Landmarks Preservation Council of Illinois in addition to the municipal Commission. (Read more...)