Ab anbar | A masterpiece of ancient water reservoir architecture

Ab anbar has a long history in Iran. According to the findings the oldest signs of using some facilities to reserve and use the water currents in Iran were in Elam era.One of the oldest water reservoirs in Iran is the water reservoir of Qala-Istkhar Fars.

Sa’d Al-Saltaneh Caravanserai | Old Persia’s best Caravanserai

Sa'd Al-Saltaneh Caravanserai located in the heart of Qazvin city and is still used as a Bazaar. It's the largest indoor Caravanserai in Iran. Its galleried structure includes elaborately decorated chambers.

Windcatcher | representative of Iranian desert architecture

Windcatcher was acknowledged as a world heritage by UNESCO but it's not registered yet. Besides Iran some other countries such as Arab Emirates are trying to register this structure as their own.
Soltaniyeh

Soltanieh Dome | An outstanding work of architecture

Soltanieh Dome one of the most significant works of Islamic-Persian architecture which dates back to 700 years ago and is also recorded in the UNESCO World Heritage List.
,

Historic City of Yazd | A living UNESCO site on the Silk Road

Yazd is the first historical city in Iran to be listed on the UNESCO World Heritage List on 9 July 2017 because of its architectural styles and its intact historical fabric
shushtar | Wikipedia
,

Shushtar hydraulic system | Masterpiece of ancient engineering

Shushtar Mills and Waterfalls is undoubtedly the most unique water structure in the world. This historical complex has been registered in UNESCO’s List in 2009.
Ardashir Palace
,

Sassanid Archaeological Landscape of Fars region

Sassanid Archaeological Landscape of Fars Region includes eight Archaeological sites in three historical regions of Bishapur, Sarvestan and Firuzabad which are officially registered by UNESCO on 2018 as the 23rd UNESCO World Heritage Site in Iran.
Sheikh Safi
,

Sheikh Safi al-din Khanegah and Shrine Ensemble

Sheikh Safi al-Din Khanegah and Shrine Ensemble was Built between the beginning of the 16th century and the end of the 18th century.It’s considered an Iranian tangible cultural heritage in UNESCO List.
Golestan Palace
,

Golestan Palace | One of the most beautiful palaces in Tehran

Golestan Palace which was originally built in Safavid era.Due to the unique beauty and elegance of the architecture the palace was declared as one of the World Heritage Sites in 2007 by UNESCO.