marker outlining the site's significance. The PDNA aims to bring much needed infrastructure and retail to the area. Landmarks Built in 1836 and untouched by the great Chicago fire of 1871, the Clarke House is Chicago’s oldest house and is a classic example of the Greek revival style. Moved twice, and opened as a house museum in 1982, it features 19th century furnishings depicting life on the urban frontier. The John J. Glessner House was designed in 1885 by architect Henry Hobson Richardson and completed in late 1887. Both properties were designated Chicago landmarks on October 14, 1970. The Clarke and Glessner houses are key PDNA partners. With such rapid growth in the South Loop, residents who live within the Prairie District Neighborhood Alliance boundaries have become increasingly concerned about the quality of new development and the quality of work performed on properties being converted to residential use. Condo boards and residents have begun to band together to make their voices heard. A few have achieved high-profile status. Additionally, the PDNA and area residents work with the city government to actively review proposed development projects in an effort to encourage smart growth. This is to protect the architectural character of the historic Prairie Avenue district. Notes External links Official City of Chicago Near South Side Community Map Prairie District Neighborhood Alliance Glessner House Museum Historic districts in Chicago Central Chicago National Register of Historic Places in Chicago Neighborhoods in Chicago Historic districts on the National Register of Historic Places in Illinois Chicago Landmarks Organizations based in Chicago