12 Iranian Architecture Designs

Iranian architecture is one of the world’s oldest and most influential traditions. For over 2,500 years, from the Achaemenid Empire to the Safavid dynasty, Iranian architects developed a distinctive language of forms: the iwan, the dome on squinches, the four-iwan plan, the char bagh garden, and the muqarnas vault. Iranian architecture is characterised by brilliant blue tilework, intricate geometry, and the masterful use of water and light.

These 12 Iranian architecture designs span palaces, mosques, gardens, and bazaars. Each design includes defining characteristics, key examples, and architectural principles.

1. The Four-Iwan Mosque

The four-iwan mosque is the most recognisable Iranian architectural form. A central courtyard has four iwans — vaulted halls open to the courtyard on one side — one on each side. The iwans are framed by pishtaqs (tall, decorated portals). The largest iwan leads to the domed prayer hall on the qibla side.

This design is ideal for mosques, madrasas, and palaces. The emotional effect is axial, monumental, and hierarchical.

Quick Tips

The qibla iwan must be the largest and most decorated.
The courtyard should be large enough for gathering.
Pishtaqs should rise above the courtyard walls, framing each iwan.

2. The Dome on Squinches

The Iranian dome sits on a square base. The transition from square to circle is achieved with squinches — arches built across the corners of the square. The squinches create an octagonal ring, which supports the dome. The dome is often double-shelled: an inner dome visible from inside, an outer dome visible from outside.

This design is ideal for mosques, tombs, and palaces. The emotional effect is celestial, awe-inspiring, and structural.

Quick Tips

Squinches must be visible in the transition zone.
The dome should be taller than a hemisphere — pointed.
The exterior of the dome should be tiled in blue.

3. The Pishtaq

The pishtaq is a monumental portal framing an iwan. It is a tall, rectangular frame that rises above the iwan arch. The pishtaq is covered in tile decoration, calligraphy, and geometric patterns. The pishtaq announces the importance of the space behind it.

This design is used on mosques, madrasas, and palaces. The emotional effect is vertical, monumental, and decorative.

Quick Tips

The pishtaq should be taller than the iwan it frames.
Tile decoration should cover the entire surface.
Calligraphy should be placed in a rectangular band around the arch.

4. The Char Bagh Garden

The char bagh is a four-part garden divided by water channels. The garden is a paradise on earth, symbolising the four rivers of life. The water channels meet at a central pool or pavilion. The garden is walled. The char bagh is the quintessential Iranian garden.

This design is ideal for tombs, palaces, and pleasure gardens. The emotional effect is paradisiacal, ordered, and refreshing.

Quick Tips

The garden must be divided into four equal quadrants by water channels.
A central pavilion or pool must mark the intersection.
The garden must be walled for privacy and protection.

5. The Muqarnas Vault

Muqarnas is a form of ornamental vaulting, resembling honeycombs or stalactites. It is used on domes, iwans, and cornices. The muqarnas is built from tiers of small niches that transition from a square or polygonal base to a circular or domed top. Muqarnas has no structural function — it is pure ornament.

This design is used on iwans, domes, and entrance portals. The emotional effect is complex, celestial, and dazzling.

Quick Tips

Muqarnas should transition from a square or polygonal base to a circular or domed top.
Each tier of niches should be smaller than the one below.
The underside should be decorated with tile or paint.

6. The Windcatcher (Badgir)

The windcatcher is a traditional Iranian cooling structure. It is a tall tower on the roof of a building, with openings facing prevailing winds. The tower captures wind and directs it down into the building, often over a water fountain that cools the air further.

This design is ideal for houses in hot, dry climates. The emotional effect is cooling, sustainable, and ingeniously simple.

Quick Tips

The windcatcher must face the prevailing wind direction.
The tower height determines the wind pressure — taller is more effective.
A water fountain or pool beneath the windcatcher enhances cooling.

7. The Iranian Bridge

The Iranian bridge is a stone arch bridge, often with multiple arches and decorative elements. The bridge may have a pavilion at the centre or towers at the ends. The bridge is both functional and beautiful. The most famous is the Si-o-se-pol (Bridge of 33 Arches) in Isfahan.

This design is ideal for river crossings in cities. The emotional effect is rhythmic, civic, and beautiful.

Quick Tips

The bridge should have multiple arches.
Arches should be pointed or semi-circular.
A pavilion or walkway should be provided for pedestrians.

8. The Bazaar

The bazaar is a covered market street. The street is lined with shops on both sides. The roof is vaulted, often with a series of domes or barrel vaults with openings for light. The bazaar is a linear space, sometimes branching into smaller streets. The bazaar is the spine of the Iranian city.

This design is ideal for commercial districts in cities. The emotional effect is bustling, shaded, and labyrinthine.

Quick Tips

The main street should be 4-5 metres wide for comfortable pedestrian flow.
Shops should be small and uniform, typically 2-3 metres wide.
Domes or vaults should have openings for light and ventilation.

9. The Iranian Palace

The Iranian palace is a complex of courtyards, gardens, pavilions, and reception halls. The palace is organised around a series of courtyards, each with a different function. The most important courtyard leads to the throne room. The palace is decorated with tilework, mirror work, and painting.

This design is ideal for royal residences and government buildings. The emotional effect is imperial, luxurious, and hierarchical.

Quick Tips

The palace should have multiple courtyards arranged in sequence.
The throne room should be the largest and most decorated.
Gardens and water channels should be integrated.

10. The Ab Anbar (Water Reservoir)

The ab anbar is a traditional Iranian water reservoir, storing drinking water for a neighbourhood. The reservoir is underground, with a domed roof above ground. The dome has windcatchers to cool the water. The ab anbar is entered by a staircase.

This design is ideal for hot, dry climates. The emotional effect is cooling, communal, and ingeniously simple.

Quick Tips

The reservoir must be underground for coolth.
The dome must have windcatchers.
A staircase must provide access to the water.

11. The Iranian Caravanserai

The caravanserai was a roadside inn for merchants and their caravans. The plan is a large courtyard surrounded by arcaded rooms. The courtyard is large enough for camels or horses. The gateway is monumental, often with a pishtaq. A small mosque is attached.

This design is ideal for trade routes. The emotional effect is protective, communal, and commercial.

Quick Tips

The courtyard must be large enough for animals.
The gateway must be monumental with a pishtaq.
A small mosque should be attached.

12. The Iranian Garden Pavilion

The Iranian garden pavilion is a small, open building set within a char bagh garden. The pavilion is open on all four sides, with arches and columns. The roof is flat or domed. The pavilion sits at the intersection of water channels. It is a place for pleasure, poetry, and music.

This design is ideal for gardens and pleasure grounds. The emotional effect is open, garden-framed, and poetic.

Quick Tips

The pavilion must be open on all four sides.
The pavilion should sit at the intersection of water channels.
The roof should be flat or a shallow dome.

Final Thoughts

These 12 Iranian designs are not mutually exclusive. A four-iwan mosque can have a dome on squinches, a muqarnas vault, and blue tile decoration. An Iranian palace can have a char bagh garden, a windcatcher, and a garden pavilion. The best Iranian architecture is not the most restrained — it is the most perfect. It is the architecture of geometry, light, water, and paradise. It is the architecture of Iran.