<Tr> <Th_colspan="2"> References </Th> </Tr> <P> The Home Insurance Building was a skyscraper in Chicago, United States, designed by William Le Baron Jenney in 1884 . Completed a year later, the build is generally noted as the first tall building to be supported, both inside and outside, by a fireproof structural steel and metal frame; including reinforced concrete . </P> <P> The building opened in 1885 and was demolished 47 years later in 1931 . </P> <P> The building was completed in 1885 in Chicago, Illinois, and was the first tall building to use structural steel in its frame, but the majority of its structure was composed of cast and wrought iron . While the Ditherington Flax Mill was an earlier fireproof - metal - framed building and is sometimes considered to be the first skyscraper, it was only five stories tall . </P>

When was the first skyscraper built in chicago