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You might think that you are just boring a commodity, you might use several thousand times a year. Well, a commodity they are, boring - not precisely.
In the early days, they were made with irregular steps so that the burglar would trip, fall and wake up the homeowners up. Another interesting fact is that the ergonomic figure was before, that they were either too steep or too short and lethal accidents often happened. Later on, the comfortable stairs were only used for public places and front steps, while the servants got the breakneck stairs. Nowadays, the staircase is not only functional but also rather beautiful pieces of home design.
This application provides a variety of beautiful staircase models. May be useful!