some excellent Rio aerials, ALL of them by Luk´s, at this thread in SSC
http://www.skyscrapercity.com/showthread.php?t=1471987
port area and the start of Rio-Niterói bridge
downtown and Sugarloaf mountain behind
downtown, Flamengo and Botafogo neighborhoods (and Urca, at Sugarloaf´s base)
Niterói, at the other side of Guanabara Bay, and the other side of the Rio-Niterói bridge
Niterói
Niterói in the bottom, and Rio on the other side
Guanabara Bay (dont know what Guanabara means... must check my Tupi-Guarani language dictionary lol)
Governador Island and international airport
downtown
from left to right, along the Guanabara Bay coast: Botafogo, Flamengo, Centro (downtown)
sugarloaf
remember, there are 11 million people at Rio´s metro area... (at the left bottom, the start of Copacabana beach, at the Atlantic Ocean coast)
Copacabana and Ipanema beaches
Copacabana (right), Ipanema (left), Rodrigo de Freitas lagoon... and the Christ State, somewhere inside those clouds
a closer look at Ipanema gives us a better notion of dimensions
Barra da Tijuca neighborhood
and from the same thread, by the same author, Buenos Aires