Chiang Mai has numerous attractions for tourists. In the past it was the capital of the Lan Na Kingdom. The old city was founded in 1396, situated between the Ping River in the east and Suthep mountain range in the west. It is quadrangular with a city wall made of brick enclosing an area of 3.6 km2 (Somchote Ongsakul et al. 2003; Prasit Leephrecha, kwancheewan Bua-dang and Panadda Bunyasaranai 2003.). The moat around this wall still exists, while most of the wall has been demolished, leaving only citadels and gates, parts of which have recently been reconstructed. To the east of the walled city, there was also an outer defence in the form of a dyke or earthen wall. Some parts of this can still be seen along the canal Khlong Mae Kha. This canal is a natural watercourse and runs beside the dyke, serving in the past as its moat. It is however called a “khlong” which translates as a “canal.”