Liwan (Arabic: ليوان, from the Persian iwān) is a word used since ancient times into the present to refer to a long narrow-fronted hall or vaulted portal found in Levantine homes that is often open to the outside. An Arabic loanword to English, it is ultimately derived from the Persian iwān, which preceded by the article al ("the"), came to be said as Liwan in Arabic and later, English.
In its simplest form, the history of the liwan dates back more than 2,000 years, when the liwan house was essentially a covered terrace, supported by retaining walls, with a courtyard in front.
In its more complex forms, the liwan house is composed of a large ceremonial entrance hall (liwan) at the front of the complex, divided into three sections, and flanked by two smaller liwans. The back of the house opens onto a columned peristyle courtyard from which the main room and the private apartments opposite can be accessed, with symmetry on either side of the central axis.
Mats and carpets are typically spread along the length of the floor of the liwan, and the mattresses and cushions along the length of the walls make up the diwan or divan seating area.