Works of European painters presented to the Qajar court are housed in the Howz Khaneh.

The Howz Khaneh was used as a summer chamber during the Qajar ear.  A special cooling system pumped water form a subterranean system of streams (qanats) – in this case the king’s qanat – into small ponds inside the chambers. Hows means pond, thus the name Hows Khaneh.  The system was designed to pass through as many summer rooms as was necessary.  The water was then channeled outside to irrigate the royal gardens.  Due to the harmful effects of humidity, this system is no longer in use.