Located roughly 150 km northwest of Tehran, Qazvin occupies a critical position on Iran’s primary east-west transport axis. Its proximity to the capital and access to the Alborz passes give it enduring logistical relevance.

Qazvin briefly served as the Safavid capital before Isfahan, imprinting it with administrative infrastructure and urban planning. In the modern era, industrial zones and transport connectivity reinforced its role as a gateway city.

Qazvin served as the capital of the Safavid Empire from 1555 to 1598, when Shah Tahmasp relocated the court from Tabriz to place it further from Ottoman attack. The city developed a sophisticated urban fabric under Safavid patronage before Shah Abbas I transferred the capital to Isfahan. The Ali Qapu gate and several historic structures survive from this period.

Through the Qajar era Qazvin retained regional importance as a trade and administrative node on the main corridor between Tehran and Tabriz. Industrialisation accelerated during the Pahlavi period. After 1979 Qazvin expanded as an industrial satellite of Tehran and remains a significant manufacturing and distribution hub in the northwest.

Today Qazvin hosts manufacturing, food processing, and logistics facilities. Its location makes it a pressure valve for Tehran’s industrial spillover and a control point on routes toward Tabriz, Rasht, and the Caucasus.