45 kilometers northeast of the city of Takab, a historic site can be seen. It is the heritage remained from the Sassanid era (226–650 AD). Takht-e Soleiman (Solomon’s Throne) is home to one of the three famous Sassanid fire temples. It is also where the kings of the Sassanid dynasty were crowned.
This monument was most probably built during the reign of King Pirooz (457- 484 AD), King Anoushirvan’s grandfather. Although archeological excavations in the historic site of Takht-e Soleiman have also revealed remains of the Achaemenid and Median eras, this ancient site is most known for its Sassanid monuments such as: Azargoshnasb Fire Temple, Anahita Temple, Hadaya (Gifts) Museum, Zendan (Jail) Mountain, and Belgheis Castle.
Remains of the only castle dating back to the Ilkhanid period (1256-1353 AD) can also be seen in this historic site. In addition to historic monuments, those who travel to Takht-e Soleiman may also see an absolutely eye-catching lake with changing colors in front of Khosrow’s portico. The deepest point of this lake is 112 meters from the sea level. Its temperature is reduced to 40 degree Celsius due to a natural spring that exists along its bed. The complex of Takht-e Soleiman and its landscape is the first Persian heritage inscribed in UNESCO’s List of World Heritage Sites after the Islamic revolution of 1979. It was added to the said list three years ago.