TDE /At the heart of a dry mountain, this historical site is placed
It's around 2.5 hours drive from Zanjan city (6 hours from Tehran).
There are little buildings remained and most of it already demolished.
But there is a very strange lake in the site.
The lake has a fixed temperature of 21 degrees centigrade in all seasons (summer and winter). No one knows the secret behind it.
Takht-e Soleyman was the principal sanctuary and foremost site of Zoroastrianism, the Sasanian state religion. This early monotheistic faith has had an important influence on Islam and Christianity; likewise, the designs of the fire temple and the royal palace, and the site’s general layout, had a strong influence on the development of religious architecture in the Islamic period, and became a major architectural reference for other cultures in both the East and the West. The site also has many important symbolic relationships, being associated with beliefs much older than Zoroastrianism as well as with significant biblical figures and legends.