Merlo is located in the northeast end of San Luis' province, on the western skirt of the Mountains of the Comechingones, natural limit with the province of Córdoba.
Their construction rhythm is one of the highest of the country, 150 new connections are enabled to the electric system per month.
The urban helmet of the village is 890 m.s.n.m. and extends toward the east. The 1280 m.s.n.m reaches., offering a wonderful view of the valley of Concarán.
It was founded by Don Juan of Videla in the year 1797. It possesses an unique microclimate that he/she invites to visit him during any time of the year. Their climate is moderately dry, the half temperature is of 20º.
The same one is given in a fringe that understands about 30 kms wide for 3 km deep. According to the available information, different microclimates exist in the world; the main ones are: that of Lenk in Switzerland, that of California in United States and that of Merlo in Argentina.
