Qal’at al Bahrain

The Qal'at al-Bahrain (also Qala'at al-Bahrain) (Arabic: قلعة البحرين; Portuguese: Forte de Barém), also known as the Bahrain Fort or Portuguese Fort, is an archaeological site located in Bahrain. Archaeological excavations carried out since 1954 have unearthed antiquities from an artificial mound of 12 m (39 ft) height containing seven stratified layers, created by various occupants from 2300 BC up to the 18th century, including Kassites, Greeks, Portuguese and Persians, making it the oldest fortification in the Persian Gulf region. It was once the capital of the Dilmun civilization and was inscribed as a UNESCO World Heritage Site in 2005.

Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).