Ennigaldi-Nanna's museum is the earliest known public museum. It dates to circa 530 BCE. The curator was Ennigaldi, the daughter of Nabonidus, the last king of the Neo-Babylonian Empire. It was in the state of Ur, in the modern-day Dhi Qar Governorate of Iraq, roughly 150 metres (490 ft) southeast of the famous Ziggurat of Ur.