Tomb of Bayazid Bastami - Bastam near Shahroud
Abu Yazid Tayfur b. Īsā b. Surushan al-Bistāmī, commonly known as Bayazid Bastami with the epithet of Sultān-ul-Ārifīn (King of the Mystics), is the greatest mystic of century 3 AH and lived between 161 (777 AD) and 234 (848 AD) AH