One of the specifications of Persian
Architecture is compound and middle aisle.
Caravanserais, schools and mosques have
mostly an aisle or central yard. Middle Aisle had played two important
1- Building was separated from noise and
busy surrounding of the daily business, by setting and centralizing
Aisle was a way of access to "Shabestan" (part of a mosque
designed for sleeping or prayer) and auxiliary parts like staircase
and also to rooms with veranda on each side.
2- Provided the need of people to a place of washing ablution and
repose, loading and packing in compound of Caravansary.
Its plan was usually rectangular or
quadrate, but sometimes it was built through round
or multilateral plans.