Tehran lies on an incline, some 1200 meters above sea level, at the southern foothills of the mighty Elburz range, 256 kilometers south of beautiful shores of the Caspian sea. Its expansion began in the 16th century under the Safavid monarch Tahmasb I. Karim Khane-Zand was crowned in Tehran in 1758. The city’s relatively temperate climate was the principle attraction for Qajar monarchs.
The Safavid Shah Suleiman was the first to build a royal palace in Tehran. This was the Chahar Bagh (Four Garden) palace. The city was known as Chenarestan by Iranians on account of its large number of tall and shady plane trees (Chenar in Persian). Its tolerable climate encouraged princes and grandees to build themselves palaces and pavilions around the city.