Chellah, also known as Shalla, is a medieval fortified Islamic necropolis located in Rabat, Morocco. The site was originally established by Phoenicians as a trading center in the 1st millennium BC. Later it becames an ancient Roman colony in the province of Mauretania Tingitana. During the Almohad era the site was mostly abandoned and then rebuilt by the Marinids in the 13th century AD and became a royal cemetery and a mosque and minaret were built. Chellah was inscribed as a UNESCO World Heritage Site in 2012 as part of Rabat, Modern Capital and Historic City a Shared Heritage.