Khorasan is one of Iran province located in north eastern part of Iran. Khorasan is a Persian name which means where the sun rise from. Khorasan used to be the largest province of Iran until it was divided into three sections on 2004. This province includes many natural and historical attractions like mineral water springs, small lakes, recreational areas, caves and protected regions, and various hiking areas, beside Khorasan include several religious buildings, such as the shrine of Imam Reza and Goharshad mosque. The cultural heritage organization listed 1179 sites in Khorasan. This province is situated in a kind of temperature zone that caused to have a changeable weather. Mashhad the capital city of Khorasan is the holiest city of Iran. Every year, millions of pilgrims visit the Imam Reza shrine and show their respect to him.