The following are photos of Avicenna's tomb in Irans western city of Hamadan. The birth anniversary of Avicenna, on August 22, is commemorated by Iranians asas National Doctors Day. Avicenna, also known as Ibn Sina, was a Persian and Muslim physician, astronomer, alchemist, chemist, logician, mathematician, metaphysician, philosopher, physicist, poet, scientist, theologian, and statesman. He was born around 980 AD in Afshana, near Bukhara which was then a part of Iran and is now in Uzbekistan, and died in 1037 AD in the city of Hamadan.