The breathtakingly huge main dry-dock of the Pallion Shipyard, Sunderland is one of largest structures I've experienced and a bittersweet reminder of when Sunderland was one of the largest shipbuilding towns in the world. The air of melancholy is reinforced as the main 181m x 49m dock at Pallion currently holds the historic Isle of Man Steamship Manxman in the process of being scrapped after the result of an unsuccessful campaign to restore her.