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.
Hammond Building
The Hammond Building was a high-rise building completed in 1889 at the southeast corner of Griswold Street and West Fort Street in the financial district of downtown Detroit, Michigan directly across Fort Street from the Detroit City Hall. The building was designed by George H. Edbrooke, and is considered the first skyscraper in the city, and was the tallest in the state when built. Russell Wheel & Foundry supplied and erected the iron and structural steel for the building. The Hammond Building was demolished in 1956 to make way for the National Bank of Detroit Building, which has since been renamed The Qube. At 12 stories, the steel-framed United Way Community Services Building (1895), originally the Chamber of Commerce Building, qualifies as Detroit's oldest existing skyscraper.