Painting by the French architect, Pascal Coste, visiting Persia in 1841. The painting shows the main courtyard, with two of the iwans. The iwan to the right is topped by the goldast, which in many Persian mosques had replaced the function of the minarets.
Snaps from inside a Safavid era pigeon house in Meybod, Yazd province of Iran.
As the name suggests, these were built to encourage pigeons to nestle inside the building - hence the myriad of alcoves through the multi-storey ribbed cylindrical building.
The phosphate rich droppings would be collected and used by farmers to fertilise their crops. Thankfully, this one is no longer used for that purpose - I can’t imagine much worse than being surrounded by thousands of these birds (read: winged rats) but it’s pretty ingenious and makes for some striking photos nonetheless.