The Home Insurance Building was a skyscraper in Chicago, United States, designed by William Le Baron Jenney in 1884, for the Home Insurance Company in New York. Completed a year later, the building is generally noted as the first tall building to be supported both inside and outside by a fireproof structural steel and metal frame, which included reinforced concrete. Because of the building's unique architecture and weight-bearing frame, it is considered the one of the world's first skyscrapers. It had 10 stories and rose to a height of 138 ft (42 m). In 1891, two floors were added. The building opened in 1885 and was demolished 47 years later in 1931.