Isfahan (Es?fa?han (??s’f?-h??n') or Is?fa?han is a city in central Iran. Located south of Tehran, it is considered by the locals to be one of the most beautiful cities in the world. An ancient town and capital of Persia from 1598 to 1722, it was long noted for its fine carpets and silver filigree. Today textile and steel mills take over their place. Its architecture, tree-lined boulevards and relaxed pace make it one of the highlights of Iran's cities. The capital of Isfahan Province, and once the country's capital, the Persians call it Nesf-e-Jahan, meaning Half The World. The city is 430 km south of Tehran at the foothills of the Zagros mountain range. The city enjoys a temperate climate and regular seasons. Isfahan is located on the main north-south and east-west routes crossing Iran. It is similar to Denver, Colorado in terms of altitude and precipitation.