Sé Catedral, Porto
Tel: 351 222 059 028
Concierge.com's insider take:
The formidable cathedral dominating central Porto is worth a visit for its ornate interior and its mixture of architectural styles. Despite attempts to "beautify" it in the 18th century, the cathedral retains the hard, simple lines of its Romanesque origins—though it's really more impressive from a distance than close up.
Open 9 a.m. to 12:30 p.m. and 2:30 p.m. to 7 p.m. daily in the summer (until 6 p.m. in the winter), except during masses, held at 9 a.m. and 11 a.m.