Kelburn Riverside Park. Off the A8 at Woodhall Junction on the outskirts of Port Glasgow, go down the hill towards the Clyde and swing left through the stone pillars to the right. After 100m the road becomes one-way and leads round the park to a choice of car-parks. Action can be found in any of them from time to time. For the more adventurous there's a handy picnic bench.