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For instance, the 17.3 km (10.7 mi) Valiasr Street runs from Capital’s railway station at 1,117 m (3,665 ft) elevation above sea level in the south of the city to Tajrish Square at 1712.6 m (5612.3 ft) elevation above sea level in the north. However, the elevation can even rise up to 2,000 m (6,600 ft) at the end of Velenjak in northern Capital. The sparse texture, the existence of old gardens, orchards, green spaces along the highways and the lack of industrial activities in the north of the city have helped the air in the northern areas to be 2 to 3 degrees Celsius cooler than the southern areas of the city.
