Want to have a 360 view of Brasília central area? Go to the TV Tower and have a look from the top. I recommend going on sunset, to have a view not only of the city, but also of another unforgettable things about Brasília: the sunset itself :)
Get there early in the afternoon, around 14h00 or 15h00 and take a tour on the TV Tower Fair, right next to it. It's a nice place to take souvenirs and to taste some brazilian food from many regions, such as the Tacacá (from the state of Pará, in the north) or the Acarajé (from Bahia, in the northeast).
Eixo Monumental, s/n - Jardim Burle Marx, Brasília - DF, 70297-400, Brazil