For 10 consecutive years, Barcelona has appeared first in a survey of European cities that asks which city offers the best Quality of life to its citizens. So what makes Barcelona, one of the world's most-visited cities, one of the best place to live? Residents and visitors to the city point out several aspects relating to everyday life, including the friendliness of the people, the efficiency of the public transportation system, safety, a very rich cultural heritage, and the high quality of education