Everything has a story or history and restroom is not an exception. Toilet is an important part in individualistic and social life and according to statistics every person spends at least 3 years of his/her life in restrooms.
Iranian Toilet or Mongol Toilet
Maybe you have not heard anything about toilet history and you like most of people use Iranian or European toilet term, but our ancestors and primogenitors in Achaemenid Era, in Aryan culture, paid attention to their joints health so that according to the remained drawings from ancient Iran it is obvious that during Achaemenid Era, there were chair-like platforms that people sat on them for defecation and there was sewage and discharge system at the center on this stone platform.