The term "qsūr" or qsars (also commonly spelled "ksar" or "ksour") is used to denote fortified villages in the desert, mountain, and oases regions of Morocco, again associated with Amazigh architecture. They are typically surrounded by a defensive wall reinforced with towers, again built out of rammed earth, mud-brick and/or stone. The perimeter wall typically has just one gate, with most public buildings located near this gate. Aït Benhaddou is one famous example of a preserved "qsar" settlement, complete with a tall kasbah near its entrance and an "agadir" up on a hilltop.