I like this amazing architecture so much.
The Yazd Water Museum was opened in 2000 inside a 19th century house, and it features exhibits of water storage vessels and historical technologies related to water.
Qanat (Kariz) system is an ancient Persian system to bring water from far away to the middle of deserts. Iranians has been doing it for more than 2500 years and it's gone to China, Spain, Africa countries and even Mexico later.