References

* **Statistical Center of Iran (SCI):** Official demographic and census data. * **Tehran Municipality:** Civic infrastructure, public service, and urban planning information. * **UNESCO World Heritage Center:** Historical data and preservation details regarding the Golestan Palace. * **University of Tehran & Sharif University of Technology:** Education statistics and global academic rankings. * **Visit Iran (Ministry of Cultural Heritage, Tourism and Handicrafts):** Official tourism guidelines, facts, and site descriptions. * **World Health Organization (WHO) / IQAir:** Data regarding Tehran's air quality indices and environmental challenges. * **Lonely Planet & Standard Tourism Guides:** Baseline information for traveler safety, FAQ data, and cultural etiquette (Ta'arof, dress codes).