Do you know which is the happiest city in the world? According to the company GfK Custom Research that privilege belongs to Rio de Janeiro , where the best carnival of all is celebrated. After a survey of 10,000 people from 29 countries, the results were as follows:
1- Rio de Janeiro
2- Sydney
3- Barcelona
4- Amsterdam
5- Melbourne
6- Madrid
7- San Francisco
8- Rome
9- Paris
10- Buenos Aires
Do you agree with this curious classification?