Henry B. Clarke House
Clarke House may have been modeled on the home of William B. Ogden. The Clarke house is often described as the oldest surviving house in Chicago, although part of the Noble-Seymour-Crippen House in the Norwood Park neighborhood was built in 1833. (However, Norwood Park was not annexed to Chicago until 1893.) The Clarke House was designated a Chicago Landmark on October 14, 1970. It was added to the National Register of Historic Places on May 6, 1971.
Chicago Building
The building is a critical component of a grouping of significant structures, including Carson Pirie Scott and the former Mandel Brothers Store, at what was once labeled the "World's Busiest Corner." The building was designated a Chicago landmark on March 26, 1996. In 1997, it was converted to a dormitory for the School of the Art Institute of Chicago. The corner of the 3rd floor of the Chicago Building contains the cornerstone of Chicago. It is the 0-0 degree point of the city, and is the location from which all addresses in Chicago begin.