Iran marked by remarkable natural contrasts, is a country with 1,648,000 km² areas that equals the United Kingdom, France, Spain, and Germany combined; it is the eighteenth largest country in the world is bound on the north and south by two bodies of water, the Caspian Sea and Persian Gulf. It is bordered on the east by Afghanistan and Pakistan, on the west by turkey and Iraq, and on the northeast and northwest by the five newly independent republics of central Asia.
In the North West (Tabriz, Orumieh, Ardabil, Zanjan, Tehran), winters are cold with heavy snowfall and subfreezing temperatures especially during December and January.
In the south and center; weather is sunny most of the time, except some rainfalls in winter and spring.
Iran uses three official calendar systems: the Iranian calendar as the main date, the lunar Islamic calendar for religious events, and the Gregorian calendar for international events (like May Day). The surfeit of public holidays has been a subject of concern for almost 30 years. A substantial number of unofficial holidays are added each year to the national holidays that further aggravate the situation.
Persia has been a center of civilization for at least 7000 years. Iran art as one of the richest art heritages in the world history and encompasses many disciplines including Calico (Ghalamkar) ,Gerehchini ,Making National Musical Instruments of Iran (Tar & Setar) ,Silverwork, Woodcarving ,Engraving (Ghalamzani) , Inlaid work ,Miniature, Tile working, Writing and calligraphy and pottery. Iranians were among the first nations who use geometry, astronomy and mathematics in architecture and have wonderful skills in making massive domes and you still can visit in the structure of bazaars and mosques.
Food is used to honor guests, see in new years and celebrate various social milestones.
Iran enjoys a considerable climate diversity, which is subjected to various seasons in different parts of the country, in a way that in some areas, the coldness of winter and the warmth of summer can be seen simultaneously. Thus the weather in Iran must be judged regionally. The average annual temperature from northwest to southeast of the country varies from 10 degree Centigrade in Azerbaijan to 25-30 degree Centigrade in the south and southeast.