Tus

Tus, in the Khurasan region of northeastern Iran near modern Mashhad, was a major medieval city, birthplace of the poet Firdawsi (d. c. 1020) and of the theologian al-Ghazali (d. 1111), who was born and died there. Nearby is the shrine that grew up around the tomb of the imam Ali al-Rida (d. 818); the polymath Nasir al-Din al-Tusi (d. 1274) also took his nisba from the city.