One of the buildings in Pasargadae is the Tall-e Takht fortification. Part of the castle has collapsed, but it is still one of Shiraz's tourist attractions.
In Shiraz, there are valuable monuments, one of which is the Tall-e Takht fortification. The building is located in a complex called Pasargadae. Tall-e Takht fortification is also called Darius Fortress. Darius was the fourth Achaemenid king (including the false Bardiya) who ordered to building of Persepolis. He also ordered to build the Tall-e Takht fortification in the margin of Pasargadae.

It was built on an area of two hectares. The Tall-e Takht fortification was used as a ritual and religious edifice in ancient Iran, and the Achaemenid kings protected who fort by constructing fortresses, towers, and walls. In this fortress, there are pillared halls, storerooms, rooms, and platforms. This building was discovered by David Stronach about 40 years ago

If you want to visit the orange blossoms and enjoy the favorable weather in Shiraz, you can travel to this city in May. But in general, you should know that Shiraz's climate is warm and dry.
The Tall-e Takht fortification is near Pasargadae. You have to go to Pasargadae to visit this building. After reaching the Pasargadae Complex, you must go about two kilometers northeast to reach this monument. Visiting the building is possible every day from 9 am to 6 pm.
“Oh! Squander not this breath that Heaven hath lent thee, Nor make too sure another breath to borrow!’” Khayam