The Romani in Greece live scattered through the whole territory of the country, but with larger concentration in the bigger cities (mainly Athens and Thessalonica). Notable centres of Romani life in Greece are Agia Varvara, which has a very successful Romani community, and Ano Liosia, where conditions are bad. Romani largely maintain their own customs and traditions. Although a large number of Romani has adopted a sedentary and urban way of living, there are still nomadic settlements in some areas. The nomads at the settlements often differentiate themselves from the rest of the population. They number 200,000 according to the Greek government. According to the National Commission for Human Rights that number is closer to 250,000 and according to the Greek Helsinki Watch group to 300,000.