Wakhan valley is located along the upper reaches of the River Panjand Wakhan River (Wakhondaryo). It contains the trails of the silk caravans that went from China to Europe, traces of Buddhist pilgrims going to distant India, and was described by Marco Polo in his famous book about the diversity of the world. Wakhan was also visited by Alexander the Great with his army and Asian tribes of the Kushan Empire who preached Greco-Buddhism; by Buddhists-Tibetans who founded the great monasteries there; byArabs who brought Islam, andby the Mongols.All these cultures have left a memory in this land, hidden in the highest mountains.Evidence still exists in shrines/mazar (burial structure) with sacred groves of poplar,the ancient fortress Kafir-Kala ("Fortress of Infidels") dating back to the 3rdcentury BC, Buddhist stupa in Vrang (these parts werea large center of Tibetans and hinayana Buddhism in the V-VII century,), Zoroastrians fortress- Kaakaha, which was built in the I century BC and Bibi Fatima hot spring. There are also other archeological and historical places, museums and ancient rock paintings – petroglyphs (in Langar village) to see in Wakhan.Visitors can visit the mountainous part of the Wakhan Corridor. Wakhan Corridor - a territory of a width not exceeding 20 kilometers, stretching along the Wakhan River and now belonging to Afghanistan.Once the Wakhan corridor separated the Russian Empire and British India.