We always make a point of using funiculars (funiculi?) whenever we can. This one is pretty good - carriages a bit small but the ride down is smooth and views moderately good although nothing compared to the view at the top.
On a sunny, warm, day in Viana do Castelo, this experience is not to be missed. The venicular is not particularly exciting, but a pleasant way to get to the top (sure beats walking). And the views. Spectacular. A+ photo ops. And a reminder of the beauty of Viana do Castelo, and Portugal.
Santa luzia is one of the most important landmarks in Viana I recommend taking some photos from the top of the church and also walking up the steps to the church to burn off some calories from the cakes of Viana