Today, textile and steel mills take their place. Its architecture, tree-lined boulevards and relaxed pace make it one of the highlights of Iran. The city is 430km 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 in the United States in terms of altitude and precipitation. It is the twin city of Freiburg and Freiburg street in Isfahan is famous.