Park at the start of the road (D84) that descends towards the Marina de Porto (just after the post office). All car parks in the centre are pay-and-display.
(S/E) Go down the main road that leads into Porto.
Take a look at the sea in front of the square, then head up to the left (leaving the Genoese Tower on your right). You will pass in front of the aquarium.
(1) Go back down the street that runs along the harbour and go to the footbridge that crosses the harbour.
(2) Walk up the harbour and there are two options: either cross the beach to its southern end (on the left), or take the path that passes by the car park (where those who do not wish to visit Porto can leave their cars) and join the same point on the beach.
(3) At the end of the beach, take the paved path that runs along the edge and follow it until you reach a road, which you take downhill. You will arrive at the Portu di a Castagna pier.
(4) The return journey will be along the same path to the car park (S/E).
