A panj-dari is a traditional element of vernacular Persian architecture.

The word comes from "panj" (پنج five) and "dar" (در window or door), meaning "five windowed room".

By definition, a panjdari is a large room that is often flanked to the main talar

Talar

Talar is the architectural term given to the throne of the Persian monarchs which is carved on the rock-cut tomb of Darius at Naqsh-e Rostam, near Persepolis, and above the portico which was copied from his palace....

 of the house, and most often connected to a large balcony

Balcony

Balcony , a platform projecting from the wall of a building, supported by columns or console brackets, and enclosed with a balustrade.-Types:The traditional Maltese balcony is a wooden closed balcony projecting from a...

, where 5 large contiguous windows provide primary views to the main courtyard of the house.

In modern terms, the room would be the equivalent of the "living room" of the house. However, traditional Persian houses were very large and had many rooms. The panj-dari room was therefore a main daily hub of the inhabitants.