Sherkat-e Sahāmī-ye Zerā‘ī

This was an amazing place and I enjoyed it far more than I thought I might.

Here's some information from Wikipedia I found useful:

Persepolis (Old Persian: 𐎱𐎠𐎼𐎿, Pārsa) was the ceremonial capital of the Achaemenid Empire (ca. 550–330 BCE). It is situated 60 km northeast of the city of Shiraz in Fars Province, Iran. The earliest remains of Persepolis date back to 515 BCE. It exemplifies the Achaemenid style of architecture. UNESCO declared the ruins of Persepolis a World Heritage Site in 1979.

Name
The English word Persepolis is derived from Greek Persépolis (Περσέπολις), a compound of Pérsēs (Πέρσης) and pólis (πόλις), meaning "the Persian city" or "the city of the Persians". To the ancient Persians, the city was known as Pārsa (Old Persian: 𐎱𐎠𐎼𐎿), which is also the word for the region of Persia.

An inscription left by Sasanian prince Shapur Sakanshah, the son of Hormizd II, refers to the site as Sad-stūn, meaning "Hundred Pillars". Because medieval Persians attributed the site to Jamshid, an Iranian mythological king, it has been referred to as Takht-e-Jamshid (Persian: تخت جمشید‎, Taxt e Jamšīd; [ˌtʰæxtʰed͡ʒæmˈʃiːd]), literally meaning "Throne of Jamshid". Another name given to the site in the medieval period was Čehel Menār, literally meaning "Forty Minarets".

Geography
Persepolis is near the small river Pulvar, which flows into the Kur River.

The site includes a 125,000 square meter terrace, partly artificially constructed and partly cut out of a mountain, with its east side leaning on Rahmat Mountain. The other three sides are formed by retaining walls, which vary in height with the slope of the ground. Rising from 5–13 metres (16–43 feet) on the west side was a double stair. From there, it gently slopes to the top. To create the level terrace, depressions were filled with soil and heavy rocks, which were joined together with metal clips.

History
Archaeological evidence shows that the earliest remains of Persepolis date back to 515 BC. André Godard, the French archaeologist who excavated Persepolis in the early 1930s, believed that it was Cyrus the Great who chose the site of Persepolis, but that it was Darius I who built the terrace and the palaces. Inscriptions on these buildings support the belief that they were constructed by Darius.

With Darius I, the scepter passed to a new branch of the royal house. Persepolis probably became the capital of Persia proper during his reign. However, the city's location in a remote and mountainous region made it an inconvenient residence for the rulers of the empire. The country's true capitals were Susa, Babylon and Ecbatana. This may be why the Greeks were not acquainted with the city until Alexander the Great took and plundered it.

Darius I's construction of Persepolis were carried out parallel to those of the Palace of Susa. According to Gene R. Garthwaite, the Susa Palace served as Darius' model for Persepolis. Darius I ordered the construction of the Apadana and the Council Hall (Tripylon or the "Triple Gate"), as well as the main imperial Treasury and its surroundings. These were completed during the reign of his son, Xerxes I. Further construction of the buildings on the terrace continued until the downfall of the Achaemenid Empire. According to the Encyclopædia Britannica, the Greek historian Ctesias mentioned that Darius I's grave was in a cliff face that could be reached with an apparatus of ropes.

Around 519 BC, construction of a broad stairway was begun. The stairway was initially planned to be the main entrance to the terrace 20 metres (66 feet) above the ground. The dual stairway, known as the Persepolitan Stairway, was built symmetrically on the western side of the Great Wall. The 111 steps measured 6.9 metres (23 feet) wide, with treads of 31 centimetres (12 inches) and rises of 10 centimetres (3.9 inches). Originally, the steps were believed to have been constructed to allow for nobles and royalty to ascend by horseback. New theories, however, suggest that the shallow risers allowed visiting dignitaries to maintain a regal appearance while ascending. The top of the stairways led to a small yard in the north-eastern side of the terrace, opposite the Gate of All Nations.

Grey limestone was the main building material used at Persepolis. After natural rock had been leveled and the depressions filled in, the terrace was prepared. Major tunnels for sewage were dug underground through the rock. A large elevated water storage tank was carved at the eastern foot of the mountain. Professor Olmstead suggested the cistern was constructed at the same time that construction of the towers began.

The uneven plan of the terrace, including the foundation, acted like a castle, whose angled walls enabled its defenders to target any section of the external front. Diodorus Siculus writes that Persepolis had three walls with ramparts, which all had towers to provide a protected space for the defense personnel. The first wall was 7 metres (23 feet) tall, the second, 14 metres (46 feet) and the third wall, which covered all four sides, was 27 metres (89 feet) in height, though no presence of the wall exists in modern times.

Function
The function of Persepolis remains rather unclear. It was not one of the largest cities in Persia, let alone the rest of the empire, but appears to have been a grand ceremonial complex, that was only occupied seasonally; it is still not entirely clear where the king's private quarters actually were. Until recent challenges, most archaeologists held that it was especially used for celebrating Nowruz, the Persian New Year, held at the spring equinox, and still an important annual festivity in modern Iran. The Iranian nobility and the tributary parts of the empire came to present gifts to the king, as represented in the stairway reliefs.

Destruction
After invading Achaemenid Persia in 330 BC, Alexander the Great sent the main force of his army to Persepolis by the Royal Road. He stormed the "Persian Gates", a pass through modern-day Zagros Mountains. There Ariobarzanes of Persis successfully ambushed Alexander the Great's army, inflicting heavy casualties. After being held off for 30 days, Alexander the Great outflanked and destroyed the defenders. Ariobarzanes himself was killed either during the battle or during the retreat to Persepolis. Some sources indicate that the Persians were betrayed by a captured tribal chief who showed the Macedonians an alternate path that allowed them to outflank Ariobarzanes in a reversal of Thermopylae. After several months, Alexander allowed his troops to loot Persepolis.

Around that time, a fire burned "the palaces" or "the palace". Scholars agree that this event, described in historic sources, occurred at the ruins that have been now re-identified as Persepolis. From Stolze's investigations, it appears that at least one of these, the castle built by Xerxes I, bears traces of having been destroyed by fire. The locality described by Diodorus Siculus after Cleitarchus corresponds in important particulars with the historic Persepolis, for example, in being supported by the mountain on the east.

It is believed that the fire which destroyed Persepolis started from Hadish Palace, which was the living quarters of Xerxes I, and spread to the rest of the city. It is not clear if the fire was an accident or a deliberate act of revenge for the burning of the Acropolis of Athens during the second Persian invasion of Greece. Many historians argue that, while Alexander's army celebrated with a symposium, they decided to take revenge against the Persians. If that is so, then the destruction of Persepolis could be both an accident and a case of revenge.

The Book of Arda Wiraz, a Zoroastrian work composed in the 3rd or 4th century, describes Persepolis' archives as containing "all the Avesta and Zend, written upon prepared cow-skins, and with gold ink", which were destroyed. Indeed, in his Chronology of the Ancient Nations, the native Iranian writer Biruni indicates unavailability of certain native Iranian historiographical sources in the post-Achaemenid era, especially during the Parthian Empire. He adds: "[Alexander] burned the whole of Persepolis as revenge to the Persians, because it seems the Persian King Xerxes had burnt the Greek City of Athens around 150 years ago. People say that, even at the present time, the traces of fire are visible in some places."

Paradoxically, the event that caused the destruction of these texts may have resulted in the preservation of the Persepolis Administrative Archives, which might otherwise have been lost over time to natural and man-made events. According to archaeological evidence, the partial burning of Persepolis did not affect what are now referred to as the Persepolis Fortification Archive tablets, but rather may have caused the eventual collapse of the upper part of the northern fortification wall that preserved the tablets until their recovery by the Oriental Institute's archaeologists.Read more