development of the area. The purpose of the designation was to "keep the architecture there and encourage architecture like it and keep the wall of the park," according to the City's Department of Planning and Development. Thus, redevelopment for new uses will be part of the ongoing concerns for the neighborhood. Thus, buildings being renovated for condos and dormitories is a part of the present and future for the district. Buildings in the District Several of the buildings listed below have played a prominent role in the cultural history of Chicago. The Blackstone has become part of Chicago's history as the city that has hosted more United States presidential nominating conventions (26) than any other two American cities, The Blackstone Hotel has hosted almost every 20th century U.S. president, and it has contributed the phrase "in a smoke-filled room" to American political parlance. The Chicago Symphony Orchestra debuted on October 16, 1891, and made its home in the Auditorium Theatre until moving to Orchestra Hall in 1904. Theodore Roosevelt gave his famous Bull Moose speech in 1912 at the Auditorium and was nominated for President of the United States by the independent National Progressive Party. The Auditorium has hosted Jimi Hendrix, The Who, the Grateful Dead, and many others. The Auditorium Building is considered a milestone in the development of modern architecture. The Chicago Cultural Center serves as the city's official reception venue where the Mayor of Chicago has welcomed Presidents and royalty, diplomats and community leaders. According to Crain's Chicago Business, the Chicago Cultural Center was the eighth most-visited cultural institution in the Chicago area in 2004, with 767,000 visitors. The interior includes ornate mosaics, marbles, bronze, and stained-glass domes designed by the Tiffany Glass and Decorating Company. The Art Institute of Chicago is a fine-art museum well known for its Impressionist and American art. North to south: Statuses CL-Chicago Landmark NHL-National Historic Landmark NRHP-National Register of Historic Places Notes Central Chicago Historic districts in Chicago Chicago Landmarks Architecture in Chicago Chicago school architecture in Illinois U.S. Route 66 in Illinois