Chicago’s Home Insurance Building, widely considered to be the world’s first modern skyscraper is supported, both inside and outside, by a fireproof metal frame. Constructed in 1884 in Chicago, Illinois, USA, the building was designed by American engineer William Le Baron Jenney. This was the first tall building to use structural steel in its frame.
Jenney's lightweight steel frame relieved a structure of its heavy masonry shackles, enabling it to soar to new heights. Perplexed by this trade-in of solid brick for a spindly steel skeleton, Chicago inspectors paused the construction of the Home Insurance Building until they were certain it was structurally sound.
The Home Insurance Building stood until 1931, when it was demolished to make way for another skyscraper, the Field Building (now known as the LaSalle Bank Building).