The tomb of Cyrus the Great (natively Kūruš; c. 600 – 530 BC), founder of the ancient Achaemenid Empire, is located in Pasargadae, an archaeological site in the Fars province of Iran. It was first identified as Cyrus' tomb in modern times by James Justinian Morier, who compared the monument to that described in the writings of Greek historian Arrian.
The mausoleum is a significant historical example of earthquake engineering as it is said to be the oldest base-isolated structure in the world, allowing it great resilience against seismic hazards. It is one of the key Iranian UNESCO World Heritage Sites, as part of the archaeological site of Pasargadae.