Many caravanserais in Syria, Mesopotamia and Anatolia have considerable architectural merit; their style of construction is in general that known as Saracenic; their massive walls are of hewn stone; their proportions apt and grand.
Outside the walls are the remains of a vast city, now for the most part in ruins, but the innumerable tombs, mosques, caravanserais and other edifices, which have resisted the havoc of time, afford abundant evidence of the ancient splendour of the place.
The streets are very narrow, and the buildings of any interest few; most prominent are some large caravanserais belonging to the period of Sidon's modern prosperity, and the large mosque, formerly a church of the knights of St John.
It is the market for the produce of the surrounding districts, has six caravanserais and a post office.
Birjend has six good caravanserais, a college and some mosques; post and telegraph offices were established there in 1902.