A place in Brazil, Castanhal is an interesting place to visit, given its unique culture, history and character. After your splendid visit to Castanhal, you can proceed to an important near-by city of Belem. So, ideally any vacation planner would recommend you to visit Belem for its bountiful attractions like Estacao Das Docas, Parque Mangal Das Garcas, Basilica De Nossa Senhora De Nazare on your trip to Castanhal. Also, to reach Castanhal, you'll have to take a flight to Belem; so its not really a detour. And even if it is, the city is worth paying at least a quick visit. Popular vacation packages of Castanhal are of 1-2 days.