شاهنشاهی ساسانی — دوران طلایی ایران پیش از اسلام
The Sassanid Empire (224–651 AD) was the last great pre-Islamic Iranian dynasty and represented the pinnacle of Persian civilization before the Arab conquest. Founded by Ardashir I, who proclaimed a revival of Achaemenid glory, the Sassanids created a sophisticated empire rivaling Rome and Byzantium.
The Academy of Gondishapur was the ancient world's most important center of learning, bringing together Greek, Indian, and Persian knowledge in medicine, philosophy, and science. It is considered a forerunner of the modern university system.
Under Khosrow I (Anushirvan the Just, r. 531–579), the Sassanid Empire reached its zenith. His reforms in taxation, military organization, and scholarship created a model of just governance that influenced both Islamic and European civilization. Sassanid art, architecture, and metalwork influenced art from China to Byzantium.
The Sassanid Empire was known for its Zoroastrian high culture, the Academy of Gondishapur (world's first university), magnificent art and architecture, and being Rome's greatest rival in the ancient world.
The Sassanid Empire fell to the Arab Muslim conquest between 633–654 AD. The last Sassanid king, Yazdegerd III, was killed in 651 AD, ending 400 years of Zoroastrian rule.