Zanjan was built by Ardashir I, the first king of the Sassanid Empire and named as "Shahin". One important moment in the history of the city was in 1851 when the city became a center for the Babi uprisings, along with Neyriz and a fortress known as Shaykh Tabarsi.

The forces of the central government captured the Babi fort in Zanjan after a long siege on the orders of Grand Vizier (Prime Minister of Iran) Amir Kabir and killed or expelled the Bab's followers.

This city has experienced both glory and hardship in the course of history and with numerous monuments and natural beauties is one of Iran's tourist attractions.