Brazil occupies 8,515,767 square kilometers, making it the fifth-largest country on Earth and claiming nearly half of South America's landmass. The country extends 4,395 kilometers from north to south and 4,319 kilometers from east to west. Brazil shares borders with every South American nation except Chile and Ecuador, its 16,145 kilometers of land boundaries touching ten countries. The Atlantic coastline stretches 7,491 kilometers from the border with French Guiana in the north to Uruguay in the south. The Equator crosses through the northern states of Roraima, Amapá, and Amazonas, while the Tropic of Capricorn passes through São Paulo, Paraná, and Mato Grosso do Sul in the south. This positioning places most of Brazil's territory in the tropics, with only the southernmost states experiencing a subtropical climate.
The Amazon Basin dominates the northern half of Brazil, covering approximately 5.5 million square kilometers of the country's total area. The Amazon River itself stretches 6,992 kilometers from its source in the Peruvian Andes to the Atlantic Ocean, with roughly 3,165 kilometers flowing through Brazilian territory. At the river's mouth near Belém, the width during wet season reaches 40 kilometers. The Amazon discharges an average of 209,000 cubic meters of water per second into the Atlantic, representing about 20 percent of all fresh water entering the world's oceans. The Negro River, flowing from Colombia, spans 2,250 kilometers before joining the Amazon at Manaus, where the black water of the Negro meets the brown water of the Amazon in a visible confluence called the Meeting of Waters that extends for six kilometers without mixing. The Madeira River, at 3,250 kilometers, ranks as the Amazon's longest tributary and carries the second-highest volume of water after the main stem.
The Amazon Rainforest covers approximately 4.1 million square kilometers within Brazil's borders, representing about 60 percent of the forest's total extent. The Brazilian portion spans nine states: Acre, Amapá, Amazonas, Pará, Rondônia, Roraima, and parts of Mato Grosso, Maranhão, and Tocantins. Forest canopy height averages 30 to 45 meters, with emergent trees reaching 60 meters. Rainfall in the central Amazon averages 2,000 to 3,000 millimeters annually, distributed relatively evenly throughout the year. Temperatures remain stable, ranging from 25 to 28 degrees Celsius year-round. The forest contains an estimated 390 billion individual trees representing approximately 16,000 species. The Brazilian government's National Institute for Space Research reported 11,088 square kilometers of deforestation in the Legal Amazon region between August 2019 and July 2020, a 9.5 percent increase from the previous twelve-month period.
The Pantanal occupies 150,000 square kilometers in the states of Mato Grosso and Mato Grosso do Sul, extending into Bolivia and Paraguay. This seasonally flooded plain represents the world's largest tropical wetland. The Paraguay River and its tributaries overflow during the rainy season from November to March, inundating up to 80 percent of the Pantanal's area. Water levels fluctuate by two to five meters between wet and dry seasons. The region sits at elevations between 80 and 150 meters above sea level, with a subtle north-to-south gradient that controls water flow. The Pantanal supports 656 bird species, 159 mammal species, 98 reptile species, and 325 fish species, according to Conservation International's 2011 survey. The Transpantaneira, an unfinished 147-kilometer dirt road with 126 wooden bridges, provides the primary access route through the northern Pantanal from Poconé to Porto Jofre.
The Cerrado biome covers 2 million square kilometers across central Brazil, representing 21 percent of the country's territory. This vast tropical savanna extends across the states of Goiás, Tocantins, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Bahia, Maranhão, Piauí, Rondônia, Paraná, and São Paulo, plus the Federal District. The Cerrado experiences a distinct dry season from May to September when monthly rainfall drops below 50 millimeters. Annual precipitation ranges from 1,200 to 1,800 millimeters, concentrated between October and April. The biome sits on a plateau averaging 500 to 1,700 meters in elevation. Cerrado vegetation includes twisted trees with thick bark, scattered among grasses that can reach two meters in height. The soil contains high aluminum concentrations and low pH levels, typically between 4.0 and 5.5. Three major river systems originate in the Cerrado: the Tocantins-Araguaia, the São Francisco, and the Paraná-Paraguay. The Brazilian Agricultural Research Corporation estimates that 50 percent of the Cerrado's original extent has been converted to agriculture and cattle pasture.
The Atlantic Forest originally stretched along Brazil's entire eastern coastline from Rio Grande do Norte to Rio Grande do Sul, covering 1.3 million square kilometers. Today approximately 12.4 percent of the original forest remains, existing as fragmented patches primarily in São Paulo, Paraná, Santa Catarina, Rio de Janeiro, and Minas Gerais. The Serra do Mar mountain range, running parallel to the coast for 1,500 kilometers from Rio de Janeiro to Santa Catarina, preserves some of the most intact Atlantic Forest remnants. These mountains rise abruptly from the coast, reaching elevations of 1,000 to 1,500 meters within 50 kilometers of the ocean. Annual rainfall on the coastal slopes exceeds 3,000 millimeters in some locations, creating dense montane forests. The Atlantic Forest contains approximately 20,000 plant species, with 8,000 endemic to the biome. The forest provides water for 120 million Brazilians living in its original domain, according to the SOS Atlantic Forest Foundation's 2019 report.
The Caatinga biome occupies 844,453 square kilometers across nine northeastern states: Bahia, Ceará, Paraíba, Pernambuco, Piauí, Rio Grande do Norte, Alagoas, Sergipe, and Maranhão. This semi-arid region receives 250 to 800 millimeters of rainfall annually, distributed irregularly across space and time. Droughts can extend for eight to ten months. Temperatures average 27 to 29 degrees Celsius, with extreme highs exceeding 40 degrees Celsius. The vegetation consists primarily of thorny shrubs and small trees adapted to water scarcity, many species dropping their leaves during dry periods. The Caatinga landscape includes sporadic rock outcrops and shallow, rocky soils. The São Francisco River, flowing 2,830 kilometers from Minas Gerais through the Caatinga to the Atlantic Ocean between Alagoas and Sergipe, provides the region's primary perennial water source. The Brazilian Ministry of the Environment reported in 2020 that 46 percent of the Caatinga's original vegetation had been altered by human activity.
Lençóis Maranhenses National Park protects 1,550 square kilometers of coastal dunes in Maranhão state. These white sand dunes reach heights of 40 meters and extend up to 50 kilometers inland from the Atlantic coast. Between January and June, seasonal rainfall averaging 1,600 millimeters fills the valleys between dunes, creating thousands of temporary lagoons that can reach depths of three meters. The water remains clear due to the lack of organic material in the pure quartz sand. These lagoons support fish populations that colonize during floods, then survive in deeper pools through the dry season. The dune field advances approximately 16 meters per year toward the interior, driven by prevailing winds from the northeast. Access to the park requires travel from Barreirinhas, the nearest town 260 kilometers east of São Luís.
Chapada Diamantina National Park encompasses 1,520 square kilometers in Bahia state, protecting a mountainous region where elevations reach 1,700 meters at Pico do Barbado. The park contains dozens of waterfalls, with Cachoeira da Fumaça dropping 340 meters, making it Brazil's second-highest waterfall. The region receives its name from 19th-century diamond mining that attracted thousands of prospectors between the 1840s and 1870s. Annual rainfall varies from 750 millimeters in the east to 1,500 millimeters in the west. The park's rivers drain to both the Atlantic coast and the São Francisco River basin. Cave systems include the Gruta da Lapa Doce, extending 850 meters with chambers reaching 70 meters in height. The Vale do Pati, a 70-kilometer hiking circuit through the park's interior, traverses terrain ranging from open grasslands at high elevations to gallery forests along streams.
Fernando de Noronha comprises 21 islands and rocks located 354 kilometers off Brazil's northeastern coast. The main island covers 17 square kilometers and reaches 321 meters elevation at Morro do Pico. The archipelago emerged from volcanic activity between 12.3 and 1.7 million years ago. The marine national park, established in 1988, protects 112.7 square kilometers of ocean surrounding the islands. Water visibility frequently exceeds 50 meters. The islands support the only remaining insular Atlantic Forest fragment in the South Atlantic. Daily visitor numbers are limited to 460 tourists plus 250 residents and workers on the main island. Access requires a 1-hour flight from Recife or Natal. The Atalaia tidal pool permits only 100 visitors per day in 30-minute intervals to minimize ecological impact.
Iguazu Falls straddles the border between Brazil's Paraná state and Argentina, with the Iguazu River dropping water over a 2.7-kilometer-wide escarpment. The falls system comprises 275 individual cascades, with heights ranging from 60 to 82 meters. The Devil's Throat, a U-shaped chasm 150 meters wide and 700 meters long, channels approximately 50 percent of the river's flow through a 14-waterfall sequence. The Iguazu River above the falls drains 62,000 square kilometers. Flow rates vary from 1,500 cubic meters per second during dry periods to 12,800 cubic meters per second during floods. The Brazilian side of Iguaçu National Park covers 185,262 hectares, while the Argentine counterpart protects 67,620 hectares. The parks together received UNESCO World Heritage designation in 1984 and 1986 respectively. The Brazilian viewpoint provides panoramic perspectives across the falls' breadth, while the Argentine side offers closer access to individual cataracts.
The Paraná River forms part of Brazil's southern boundary with Paraguay, flowing 2,570 kilometers from the confluence of the Paranaíba and Grande rivers to its junction with the Uruguay River at the Río de la Plata estuary. Within Brazilian territory, the Paraná drainage basin covers 891,000 square kilometers across ten states. The Itaipu Dam, located on the Paraná at the Brazil-Paraguay border, created a reservoir extending 170 kilometers upstream when completed in 1984. The dam's 20 generating units have a total installed capacity of 14,000 megawatts. The reservoir flooded the Sete Quedas waterfalls, which previously consisted of 19 separate drops totaling 114 meters in height across a 3-kilometer stretch. Downstream from Itaipu, the river continues to the Argentine border, where the triple frontier of Brazil, Argentina, and Paraguay meets at the confluence of the Iguazu and Paraná rivers.
Mount Roraima rises to 2,810 meters at the junction of Brazil, Venezuela, and Guyana. The mountain is a tepui, a table-top mountain with vertical walls composed of Precambrian sandstone approximately 2 billion years old. Roraima's summit plateau covers 31 square kilometers and receives annual rainfall exceeding 4,000 millimeters. The mountain top hosts unique plant species adapted to nutrient-poor quartzite soils and persistent cloud cover. Access from the Brazilian side requires entering through Venezuela, as no maintained trails ascend from Brazilian territory. The nearest Brazilian town, Boa Vista, lies 215 kilometers to the south. The mountain appears in Arthur Conan Doyle's novel "The Lost World," published in 1912.
Pão de Açúcar rises 396 meters above sea level at the entrance to Guanabara Bay in Rio de Janeiro. The granite and quartz monolith formed approximately 600 million years ago when magma cooled beneath Earth's surface, later exposed through erosion of overlying rock. A cable car system installed in 1912 and rebuilt in 1972 transports visitors in two stages: from Praia Vermelha to Morro da Urca at 220 meters, then to the summit. Each cable car cabin holds 65 passengers and completes the ascent in three minutes per segment. The cable car system transported 2,850 passengers per hour in 2018. Rock climbing routes on Pão de Açúcar number more than 270, with difficulty grades ranging from 5.4 to 5.13 on the Yosemite Decimal System.
The Pampas extend across southern Brazil in Rio Grande do Sul state, covering approximately 176,000 square kilometers. This grassland biome continues into Uruguay and Argentina, with the total Pampas region spanning 750,000 square kilometers. The Brazilian portion experiences rainfall of 1,200 to 1,600 millimeters annually, distributed relatively evenly throughout the year. Temperatures range from average lows of 10 degrees Celsius in winter to average highs of 25 degrees Celsius in summer. The terrain consists of gently rolling plains with elevations between 100 and 500 meters. Native grasses include species from the genera Paspalum, Axonopus, and Andropogon, growing in mixed communities that can exceed one meter in height. Approximately 36 percent of the Brazilian Pampas retains native vegetation, according to a 2015 assessment by the Federal University of Rio Grande do Sul. Cattle ranching on natural grasslands has occurred since the 18th century.
Copacabana Beach stretches 4 kilometers along Rio de Janeiro's southern zone. The beach's distinctive wave-pattern mosaic sidewalk, designed by landscape architect Roberto Burle Marx and completed in 1970, extends along the entire length using black and white Portuguese stones. Beach width varies from 50 to 100 meters. The neighborhood behind the beach houses approximately 146,000 residents in an area of 7.8 square kilometers, creating a population density of 18,700 people per square kilometer. The New Year's Eve celebration at Copacabana regularly attracts more than 2 million attendees. Four historic forts overlook the beach: Forte de Copacabana at the southern end, completed in 1914, and three older installations at various points along the coast.
Ipanema Beach extends 2.6 kilometers adjacent to Copacabana, separated by the Arpoador rock outcrop. The beach is divided into numbered lifeguard posts called "postos," with different sections attracting distinct groups: posto 9 near Rua Vinícius de Moraes serves as a gathering point for artists and intellectuals, while posto 8 attracts families. The beach width ranges from 50 to 80 meters. The song "The Girl from Ipanema," composed by Antonio Carlos Jobim and Vinícius de Moraes in 1962, refers to Helô Pinheiro, who walked past the Veloso bar at Rua Montenegro 40. Water quality monitoring by the Rio de Janeiro State Environmental Institute tests bacterial levels weekly at eight points along Ipanema, with results posted at beach entrances.
Tijuca National Park protects 3,972 hectares of Atlantic Forest within Rio de Janeiro's urban area, making it one of the world's largest urban forests. The park comprises four sectors: Floresta da Tijuca, Serra da Carioca, Pedra Bonita/Pedra da Gávea, and Pretos Forros/Covanca. Reforestation efforts between 1861 and 1874 under the direction of Major Manuel Gomes Archer replanted approximately 100,000 trees after coffee plantations had degraded the watershed. The park contains 30 waterfalls, with Cascatinha Taunay dropping 30 meters. Pico da Tijuca, at 1,021 meters, marks the park's highest point. The Cristo Redentor statue stands at 710 meters elevation on Corcovado peak within the Serra da Carioca section. Visitor infrastructure includes 80 kilometers of trails and 17 maintained picnic areas.