The best views over the estuary are from Porthmadog's Terrace Rd, which becomes Garth Rd above the harbor. At the south end of Porthmadog, a path heads down to Borth-y-Gest, a pretty horseshoe of candy-colored houses overlooking a sandy bay. At the other end of the crescent the path continues around the cliffs; you should be able to spot Harlech Castle in the distance.
