Chellah is a medieval fortified Muslim necropolis and an ancient archaeological site on Rabat, Morocco's south side of the Bou Regreg estuary. It is one of the most important archaeological sites in the country and was once home to a bustling city with a thriving trade industry. The archaeological remains of Chellah consist of a complex of walls and towers, which date back to the 10th century when the Wattasid dynasty founded the city. These structures include mosques and mausoleums in Morocco's earliest examples of Islamic architecture. Lush gardens and orchards once surrounded it, but these were destroyed by a severe drought in the 17th century. Chellah is also home to a vibrant array of wildlife, including many species of birds and mammals. The site has been designated as a protected area since the early 1990s, and it is now a popular attraction for tourists. Visitors can explore the city's ruins, walk nature through its lush gardens, and marvel at ancient architecture. There is also a small museum on-site, which highlights the importance of Chellah in Morocco's history.