For beauty & photography, Carmo Convent (Convento do Carmo) delivers.
Hauntingly atmospheric — bare Gothic arches framing open blue sky, the city's most evocative reminder of the quake that remade it. The catch: it's small with a modest archaeology collection and an entry fee for what's essentially one ruined nave. Atmosphere-rich and quick; sits right by the top of the Santa Justa lift.