Manaus in the context of "Amazon River"

The 2016 Summer Olympics (Portuguese: Jogos Olímpicos de Verão de 2016), officially the Games of the XXXI Olympiad (Portuguese: Jogos da XXXI Olimpíada) and officially branded as Rio 2016, were an international multi-sport event held from 5 to 21 August 2016 in Rio de Janeiro, Brazil, with preliminary events in some sports beginning on 3 August. Rio de Janeiro was announced as the host city at the 121st IOC Session in Copenhagen, Denmark, on 2 October 2009.

11,238 athletes from 207 nations took part in the 2016 Games, including first-time entrants Kosovo, South Sudan, and the Refugee Olympic Team. With 306 sets of medals, the Games featured 28 Olympic sports, including rugby sevens and golf, which were added to the Olympic program in 2009. These sporting events took place at 33 venues in the host city and at five separate venues in the Brazilian cities of São Paulo, Belo Horizonte, Salvador, Brasília, and Manaus.

The Rio Negro (Spanish: Río Negro [ˈri.o ˈneɣɾo] "Black River"), or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River (accounting for about 14% of the water in the Amazon basin), the largest blackwater river in the world, and one of the world's ten largest rivers by average discharge. It originates in the tepuis of the department of Guainía, Colombia, and then flows southeastward before finally entering Brazil. Despite its high flow, the Rio Negro has a low sediment load (5.76 million tonnes per year on average in Manaus).

The Meeting of Waters (Portuguese: Encontro das Águas) is the confluence between the dark (blackwater) Rio Negro and the pale sandy-colored (whitewater) Amazon River, referred to as the Solimões River in Brazil upriver of this confluence. For 6 km (3.7 mi) the waters of the two rivers run side by side without mixing. This phenomenon is one of the main tourist attractions of Manaus. The river then flows another 60 km (37 mi) before mixing fully, but the phenomenon persists incompletely for another 30 km (19 mi).

This phenomenon is due to the vast differences in temperature, speed, and amount of dissolved sediments in the waters of the two rivers. The Rio Negro flows at near 2 km/h (1.2 mph) at a temperature of 28 °C (82 °F), while the Rio Solimões flows between 4 and 6 km/h (2.5–3.7 mph) at a temperature of 22 °C (72 °F). The light-colored water is rich with sediment from the Andes Mountains, whereas the black water, running from the Colombian hills and interior jungles, is nearly sediment-free and colored by decayed leaf and plant matter.

The following is a list of the 100 largest cities in the Americas by city proper population using the most recent official estimate.

Belém (Portuguese: [beˈlẽj]; Portuguese for Bethlehem; initially called Nossa Senhora de Belém do Grão-Pará, in English Our Lady of Bethlehem of Great Pará), often called Belém of Pará, is the capital and largest city of the state of Pará in the north of Brazil. It is the gateway to the Amazon River with a busy port, airport, and bus/coach station. Belém lies approximately 100 km (62.1 miles) upriver from the Atlantic Ocean, on the Pará River, which is part of the greater Amazon River system, separated from the larger part of the Amazon delta by Ilha de Marajó (Marajo Island). With an estimated population of 1,398,531 people — or 2,491,052, considering its metropolitan area — it is the 12th most populous city in Brazil, as well as the 16th by economic relevance. It is the second largest in the North Region, second only to Manaus, in the state of Amazonas.

Founded in 1616 by the Kingdom of Portugal, Belém was the first European colony on the Amazon but did not become part of Brazil until 1775. The newer part of the city has modern buildings and skyscrapers. The colonial portion retains the charm of tree-filled squares, churches and traditional blue tiles. The city has a rich history and architecture from colonial times. Recently, it witnessed a skyscraper boom.

Greater Manaus (Grande Manaus, officially Região Metropolitana de Manaus, in Portuguese) is a large metropolitan area located in Amazonas state in Brazil. It consists of 13 municipalities, including the capital, Manaus.