Brazil is the largest country in both South America and Latin America, it was inhabited by numerous tribal nations prior to the landing in 1500 of explorer Pedro Álvares Cabral, who claimed the area for the Portuguese Empire. Brazil remained a Portuguese colony until 1808. The climate of Brazil comprises a wide range of weather conditions across a large area and varied topography, but most of the country is tropical. Brazil's large territory comprises different ecosystems, such as the Amazon rainforest, recognized as having the greatest biological diversity in the world. Tourism in Brazil is a growing sector and key to the economy of several regions of the country. The country had 5 million visitors in 2010, Natural areas are its most popular tourism product, a combination of ecotourism with leisure and recreation, mainly sun and beach, and adventure travel, as well as cultural tourism. Festivals, art, music and food also account for the popularity of Brazil as a tourist destination.