Pasargadae /pə'sɑrgədi/ (from Old Persian Pāθra-gadā, "protective club" or "strong club"; Modern Persian: پاسارگاد Pāsārgād) was the capital of the Achaemenid Empire under Cyrus the Great (559–530 BC). Today it is an archaeological site located just north of the town of Madar-e-Soleyman and about to the northeast of the modern city of Shiraz. It is one of Iran's UNESCO World Heritage Sites. It is considered to be the location of the Tomb of Cyrus, a tomb previously attributed to Madar-e-Soleyman, the "Mother of Solomon". Pasargadae was founded in the 6th century BCE as the first capital of the Achaemenid Empire by Cyrus the Great, near the site of his victory over the Median king Astyages in 550 BCE. The city remained the Achaemenid capital until Darius moved it to Persepolis. The archaeological site covers and includes a structure commonly believed to be the mausoleum of Cyrus, the fortress of Toll-e Takht sitting on top of a nearby hill, and the remains of two royal palaces and gardens. Pasargadae Persian Gardens provide the earliest known example of the Persian chahar bagh, or fourfold garden design (see Persian Gardens). The remains of the tomb of Cyrus' son and successor Cambyses II have been found in Pasargadae, near the fortress of Toll-e Takht, and identified in 2006. The Gate R, located at the eastern edge of the palace area, is the oldest known freestanding propylaeum. It may have been the architectural predecessor of the Gate of All Nations at Persepolis. Tomb of Cyrus The most important monument in Pasargadae is the tomb of Cyrus the Great. It has six broad steps leading to the sepulchre, the chamber of which measures long by wide by high and has a low and narrow entrance. Though there is no firm evidence identifying the tomb as that of Cyrus, Greek historians say that Alexander believed it was. When Alexander looted and destroyed Persepolis, he paid a visit to the tomb of Cyrus. Arrian, writing in the second century CE, recorded that Alexander commanded Aristobulus, one of his warriors, to enter the monument.