Old Orhei (Romanian: Orheiul Vechi) is a Moldovan historical and archaeological complex located in Trebujeni, which is approximately 60 kilometres (37 mi) north-east of Chișinău on the Răut River in the Republic of Moldova.
The ancient city of Orheiul Vechi is a natural and historical complex located on a narrow bend of the Răut River.
The natural landscape of limestone rock, eroded by the river, is combined with archaeological vestiges of the ancient Trypillian civilization.
As a result of archaeological excavations, cultural layers were discovered from different epochs, such as the Paleolithic, Eneolithic, and Iron Age.
The caves contain an array of historical artifacts and Old Church Slavonic inscriptions dating from the 1690s, which testify that the Hajduk took shelter in the caves, hiding from the Ottoman Empire.