Must See:
Catedral da Se, Forte do Presepio, Museu do Cirio de Nazare, Igreja do Carmo, Palacete Pinho, Capelha de Sao Joao Batist, Palacio Lauro Sodre, Palacio Antonio Lemus, Igreja das Mercedes.
Must Do:
Boat tour through the Bay at dusk, visit the island of Mosqueiro, Restaurant hopping trying local cuisine, eat local fruits and local condiments, visit the butterfly farm at Mangal das Garcas, and see wild parrots at dawn at Ilha dos Papagaios.
What's New:
Mangal das Garcas, soon to open ecological park.
Don't Go Home Without:
Local handcrafts from Icoaraci, local candy and sweets, local pottery, balsa wood artifacts, try the Açai and tapioca ice creams.
Tips:
Belem weather is steamy and warm, always carry water with you, light clothes with light colours are recommended.