Discuss: Which metropolitan city is clean?

This thread is to discuss the opinion poll topic 'Which metropolitan city is clean?'.

I feel among all the big cities of India, Bangalore is the cleanest one. I do accept that due to changes being made in the infrastructure, there are pot holes on the roads and many a trees are being cut with out mercy. However, still the city is clean when compared to other cities.

I think still people have to realize the importance of hygeine and should not liter everywhere. Garbage should not be dumped at vacant sites. If you happen to visit the outskirts of Bangalore, you will witness such cases of garbage dumping.