Castle much better seen in the evening, but can' t do that on a cruise. whilst we were there last May at the Belem tower one of the Holland America pinnacles sailed past - at about midday - and it was leaving that afternoon - I'd be really annoyed with such a rubbish schedule: Lisbon needs much more than a day, let alone a few hours... but that's the problem with cruising...There aren't many cities that I'd want to visit for just a few hours - Ok, Bergen in June is 6 hours, but Bergen is not Lisbon...