At last, we reach the roof, but that's OK, we have plenty of time and we're not exhausted at all. Besides, we needed the exercise.

On the left, we get a good view of one of the 'composting spiggots' which each house has.

The green patches are symbolic. In reality there would be a mass of plantings of all sizes, shapes and colors, interspersed with ponds and any animals that chose to come here by wing, hoof or paw.

Plenty of people too, maybe all 2,800 would be out on the day we visited.