cleaned and restored the neighborhood in order to develop it as the cultural center and heart of the city's tourist trade. The development of the Historical Center, however, involved the forced removal of thousands of working-class residents and now necessitates local and municipal events in order to attract people to the area. The relocated workers, meanwhile, have encountered significant economic hardship in their new homes on the city's periphery, separated from access to work and civic amenities. In 2007, Porto da Barra Beach in Barra was named by the Guardian as the 3rd-best beach in the world. In 2010, the city hosted the 12th UN Congress on Crime Prevention. The city hosted the 2013 Confederations Cup and was one of the host cities of the 2014 FIFA World Cup in Brazil at its Arena Fonte Nova. As part of its preparations for the World Cup, the city re-established its public transportation lines as the Salvador Metro. Geography Climate Salvador has a trade-wind tropical rainforest climate (Köppen: Af). Temperatures are relatively consistent, showing little variance throughout the course of the year. Salvador's driest months of the year are December and January, when the city receives on average less than of precipitation. Salvador's wettest months are April, May and June, when at least of rain falls during each of these three months. Demographics In 2010, the city of Salvador was the third-most populous city in Brazil, after São Paulo and Rio de Janeiro. The city had 474,827 opposite-sex couples and 1,595 same-sex couples. The population of Salvador was 53.3% female and 46.7% male. Ethnic groups According to the 2010 IBGE Census, there were 2,675,000 people residing in the city of Salvador. The census revealed the following self-identification: 1,382,543 persons identify as Pardo (Multiracial) (51.7%); 743,718 as Black (27.8%); 505,645 as White (18.9%); 35,785 as Asian (1.3%); and 7,563 as Amerindian (0.3%). Salvador's population is the result of 500 years of interracial marriage. The majority of the population has African, European and Native American roots. The African ancestry of the city is from Angola, Benin, Congo, Ethiopia, Nigeria, Senegal and Mozambique.According to an autosomal DNA study from 2008, the ancestral heritage of the population of Salvador was estimated to be 49.2% African, 36.3% European and 14.5% Native American. The study also analyzed the genetic backgrounds of people by type of surname. Those with surnames with a religious connotation were 53.1% African in genetic