The fight to save Kolkata's heritage homes

Kolkata's historic homes reflect a rich architectural heritage - where European styles are blended with mix of colonial and Indian influences. But they are now under threat, as Divya Guha reports.I'm standing on the roof terrace of a 150-year-old bungalow in India's eastern city of Kolkata (formerly Calcutta): a rambling establishment, beautiful but unkempt and sadly disintegrating in places.