Connect with your spiritual side and meet other worshippers at Grilos Church. Sit in quiet reflection outside for a few moments or ask if you're allowed to join the next service.
Grilos Church is an interesting place to begin exploring Centro / Baixa. This house of prayer comes recommended by fellow travelers, but it isn't the only spot to see here. Set aside time for other attractions like Sandeman Cellars, Porto Cathedral, and Casa da Musica to get a complete picture of what the area has to offer.