Oristano is located in the western part of the region and is located at 9 metres above sea level in the plain overlooking the Gulf. Among the things to see include the Tower of s. Cristoforo del ' 200, the remains of the walls, the Cathedral, the Church of San Francesco. Antiquarium Arborense is the important archaeological material. The most important event is the Sartiglia: carousel horse of medieval origin, inherited from the Catalan domination, held last Sunday and last Tuesday of Carnival. It is run by the two oldest Georgian Oristano: the farmers ' gremio, which runs Sundays; the gremio of carpenters that runs on Tuesdays. The head-race is "Nishant", accompanies the second On "On", the third "on the Su Cumpoi Secundu" and a number of Knights. Participate in the sartiglia 40 teams, chosen through selections, for a total of 120 Knights.