A skyscraper is a tall continuously habitable building having multiple floors. Modern sources define skyscrapers as being at least 100 meters (330 ft) or 150 meters (490 ft) in height, though there is no universally accepted definition, other than being very tall high-rise buildings. Historically, the term first referred to buildings with between 10 and 20 stories when these types of buildings began to be constructed in the 1880s. Skyscrapers may host offices, hotels, residential spaces, and retail spaces.
By some measures, what came to be known as a "skyscraper" first appeared in Chicago with the 1885 completion of the world's first largely steel-frame structure, the Home Insurance Building. It was demolished in 1931.
Built in 1864, Oriel Chambers in Liverpool is the world's first metal framed glass curtain walled building. The stone mullions are decorative.
Wainwright Building (1891) in St. Louis
A storey or story, is any level part of a building with a floor that could be used by people. Plurals for the word are storeys (UK) and stories (US).
A large elevator panel in a North American high-rise omits several floors as well as designating three separate levels as penthouse floors.
An elevator control panel in an apartment building in Shanghai. Floors 4, 13 and 14 are missing.
Letter boxes of a residential building built in the 1970s in Hong Kong. The Chinese and English floor numberings use the traditional Chinese and the British systems, respectively, resulting in different numbers.
A Dover Custom Impulse Elevator control panel with floor numbering. In most buildings in the US and Canada with more than 12 floors, there is no floor numbered 13. The ☆ indicates the main entry floor.