After a four-hour train ride we putz around Charlestown, a beautifully preserved Georgian port. It started out as a small fishing harbor and was eventually built up to export copper from nearby mines and import coal. When the coal mining industry fell, the port was used to transport china clay. The long basin, which enabled larger sailing ships to safely moor and unload cargo, was cut from solid bedrock. As the china clay industry grew, merchants started setting up workshops for curing pilchard, burning lime, making rope and bricks, and shipbuilding.