When the sun is shining, Cardiff is a glorious city in which to spend your day, eating al fresco on the grass outside the castle or the restaurants of Mill Lane.
Go back a century and those diners would have been sitting in right in the middle of the 25-mile long Glamorganshire Canal which ran between Merthyr Tydfil and Cardiff until it progressively closed between 1898 and 1951.
The steel, iron, lime and coal that flowed down the canal from the Valleys was internationally renowned. They literally helped build the modern world.
