As of 2011, Argentina is the most visited country in South America and the fourth most visited in the Americas. According to official figures from the World Tourism Organization, in 2010 the country received more than 5,300,000 foreign tourists, which meant about 4,930 million dollars of income from divisas. The World Economic Forum estimated that, in 2006 tourism generated around US$25 billion in economic turnover, and employed 1.8 million. Domestic tourism amounted to over 80 % of this and tourism from abroad contributed US$ 4.3 billion, becoming the third largest source of foreign exchange in 2004. Around 4.6 million foreign visitors arrived in 2007, yielding a positive balance vis-a-vis the number of Argentines traveling abroad. Buenos Aires is in the midst of a tourism boom, according to the World Travel & Tourism Council, it reveals strong growth for Argentina Travel and Tourism in 2007 and in coming years, and the prestigious travel and tourism publication; Travel + Leisure Magazine, a monthly publication leader in the world-wide market of travel magazines, travelers voted Buenos Aires the second most desirable city to visit after Florence, Italy. Buenos Aires, regarded as the "Paris of South America," offers elegant architecture, exquisite cuisine, a legendary nightlife, and fashionable shopping. he most popular tourist sites are found in the historic city core, comprising Montserrat and San Telmo. The city was originally constructed around the Plaza de Mayo, the administrative center of the Spanish Colony. To the east of the square is the Casa Rosada, the official seat of the executive branch of the government of Argentina. To the north, the Catedral Metropolitana which has stood in the same location since colonial times, and the Banco de la Nacion Argentina building, a parcel of land originally owned by Juan de Garay. Other important colonial institutions were Cabildo, to the west, which was renovated during the construction of Avenida de Mayo and Julio A. Roca. To the south is the Congreso de la Nacion (National Congress), which currently houses the Academia Nacional de la Historia (National Academy of History). Lastly, to the northwest, is City Hall.
Avenida de Mayo links the Casa Rosada with the Argentine National Congress. On this avenue there are several buildings of cultural, architectural and historical importance, such as Casa de la Cultura, the Palacio Barolo and Caf¨¦ Tortoni. Underneath the avenue, the first subte (metro) line in South America, was opened in 1913. The avenue ends at Plaza del Congreso, which features a number of monuments and sculptures, including one of Auguste Rodin's few surviving original casts of "The Thinker."