Nathanz city having regard to natural attraction, desert, Karkas mountain, geo sites, protected areas have great potential to develop eco-tourism.The development of tourism in the city requires recognition of the potential and actual potential of the region. The aim of this study is to identify attractions of Nathanz city to develop new markets by using geographic information system. In this study studied the use of geographic information system and the parameters of slope, aspect, vegetation, climate and temperature zones suitable ecotourism activities: Desert, trekking, skiing, wildlife, star watching, nature watching, climbing, respectively. TOPSISS model were prioritized according to the marketing indicators: access, employment, security, investment, public feature.The results showed that on the basis of marketing desert, trekking, skiing, wildlife between these activities allocated to the first three places and star watching, nature watching, trekking, climbingto the next priority respectively.
