Once teeming with river life and the huge dockyards - once the largest in the world - the River Clyde fell on hard times as the docks closed. The city turned its back on the river and for 20 years it was little more than derelict. Today, a huge regeneration project has transformed the river so that you can walk its length. The old docks and tenements may have gone, but the spirit of Glasgow still permeates the river.