When Alexander the Great looted and destroyed Persepolis, he paid a visit to the tomb of Cyrus. Arrian, writing in the second century AD, recorded that Alexander commanded Aristobulus, one of his warriors, to enter the monument. Inside he found a golden bed, a table set with drinking vessels, a gold coffin, some ornaments studded with precious stones and an inscription on the tomb. No trace of any such inscription survives, and there is considerable disagreement to the exact wording of the text. Strabo reports that it read: Another variation, as documented in Persia: The Immortal Kingdom, is: The design of Cyrus' tomb is credited to Mesopotamian or Elamite ziggurats, but the cella is usually attributed to Urartu tombs of an earlier period. In particular, the tomb at Pasargadae has almost exactly the same dimensions as the tomb of Alyattes, father of the Lydian KingCroesus; however, some have refused the claim. The main decoration on the tomb is a rosette design over the door within the gable. In general, the art and architecture found at Pasargadae exemplified the Persian synthesis of various traditions, drawing on precedents from Elam, Babylon, Assyria, and ancient Egypt, with the addition of some Anatolian influences. According to the records by the ancient Greek historian, Aristobulus: "The tomb - in the lower parts was built of stones cut square and was rectangular in form. Above, there was a stone chamber with a roof and a door leading into it so narrow that it was hard and caused much distress for a single man of low stature to get through. In the chamber lay a golden sarcophagus, in which Cyrus' body had been buried; a couch stood by its side with feet of wrought gold; a Babylonian tapestry served as a cover and purple rugs as a carpet. There was placed on it a sleeved mantle and other garments of Babylonian workmanship... Median trousers and robes dyed blue lay there: some dark, some of other varying shades, with necklaces, scimitars, and earrings of stones set in gold, and a table stood there. It was between the table and the couch that the sarcophagus containing Cyrus' body was placed. Within the enclosure and by the ascent to the tomb itself there was a small building put up for the Magians who used to guard Cyrus’ tomb.” The Mausoleum is said to be the oldest base-isolated structure in the world, meaning it is resilient to seismic hazards. It is one of the key cultural heritage destinations in Iran.
Cyrus the Great Day, also simply known as Cyrus Day, is an unofficial holiday in Iran that takes place annually in the Tomb of Cyrus on October 29th, 7th of Aban on Iranian calendar, to commemorate Cyrus the Great. That is the anniversary of the entrance of Cyrus into Babylon. Cyrus is founder of the first Persian Empire also known as Achaemenid Empire.
During Nowruz, the Persian New Year, celebrations are held annually around the tomb by Iranians which gather from all around the country. Iranians respect Cyrus the Great as the founder of Iran and the Persian Empire.