Semana Internacional de Piano de Óbidos
This long-running festival offers two weeks, usually in July, of top-quality piano music, some of it free. Most concerts in Óbidos (there are a few in Caldas da Rainha) are staged in the compact Casa da Música near the main gate, and given the town's small size you may well end up rubbing shoulders with a star performer—or even Portugal's president, the event's patron—during your stay.