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As you are interested in the built environment, books on those resources may help:
Iran: Architectural Guide by Thomas Meyer-Wieser
Iran has one of the oldest town cultures in the world. Unlike any other oriental country, Iran shows a unique urban and architectonic development whose defining characteristics merged with other cultures over the course of time, representing an important contribution to world architecture. In this guide, author and architect, Thomas Meyer-Wieser, embarks on a journey into history, showcasing nearly 300 buildings and projects in Tehran, Isfahan and Shiraz.
Persian Art and Architecture by Henri Stierlin
From monumental architecture to miniature paintings, sumptuous carpets, and ceramics: the decorative profusion of the arts of Persia captured in glorious detail through hundreds of color photographs.... Palaces, mosques, madrasas, and mausoleums display a mesmerizing decorative complexity, with form and ornament combining to create an indivisible whole.
Upvote:3
There are many books written by non-Iranian authors and travelers like
There are also some net information in this web-page. Also there are some books written by Iranian authors like Iran Travel Guide that is unavailable outside of Iran as far as I know. (Note: This book costs only 2$ USD!)