Town Hall - the seat of the mayor of Natal. It was built in 1922 and a few decades later named after the chief of the Potiguaras tribe.
Wikipedia (Portuguese) http://pt.wikipedia.org/wiki/Pal%C3%A1cio_Felipe_Camar%C3%A3o
Address 65 Rua Ulisses Caldas, Natal 59025-090, Brazil
Coordinates -5°47'3.692" N -35°12'27.144" E