Igreja de São Francisco looks from the outside to be an austerely Gothic church, but inside it hides one of Portugal’s most dazzling displays of baroque finery. Hardly a centimetre escapes unsmothered, as otherworldly cherubs and sober monks are drowned by nearly 100kg of gold leaf. If you see only one church in Porto, make it this one.
High on your list should be the nave, interwoven with vines and curlicues, dripping with cherubs and shot through with gold leaf. Peel back the layers to find standouts such as the Manueline-style Chapel of St John the Baptist, the 13th-century statue of St Francis of Assisi and the 18th-century Tree of Jesse, a polychrome marvel of an altarpiece. The church museum harbours a fine, well-edited collection of sacred art.
In the eerily atmospheric catacombs, the great and the good of Porto were once buried. Look out for sculptural works by Italian master Nicolau Nasoni and prolific Portuguese sculptor António Teixeira Lopes.