Portugal produces a lot of excelent quality wine, which some of them even won international award in blind contests against wine super powers like France and Italy.
Because they are so unknow from the majority of the world some of them come quite as a shock (in positive terms) when some one visits our country and tastes them.
Most people only knows Port Wine which is a fortified wine to be drank as an aperitif and Mateus Rose that is a light rose wine good for fish and shellfish.
But these wines are mearly a drop of the ocean. If you like strong wines in terms of taste try the DAO region but make sure that you let the wine breathe before serving at least 10m at room temperature. Meat and cheese are the perfect companies for these wines.
On the other hand the ALENTEJO region wines are softer more delicate but an excelent quality wines, easier to drink and taste, but all depends on what you are looking for.