Best places to visit in Porto

Port wine (also known as vinho do Porto, Portuguese pronunciation: [ˌviɲuduˈpoɾtu], Porto, and usually simply port) is a Portuguese fortified wine produced with distilled grape spirits exclusively in the Douro Valley in the northern provinces of Portugal.
It's 15:45 right now , with moderate rain and the temperature of 13.94°C (57.092°F) in Porto.