Gur-e Dokhtar
Dashtestan County, Iran
Gur-e Dokhtar is an ancient tomb located in the province of Bushehr in Iran. The tomb likely dates to the 5th century BC and has great similarities to Cyrus II's tomb in Pasargadae, but is smaller. It has been argued to be the tomb of either Cyrus the Great's grandfather, Cyrus I, or his later descendant Cyrus the Younger.
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).