Dhobi Ghat is a famous place in Mumbai, India. It is well-known for its open air laundromat where all most of the hotels and hospitals send their clothes or blankets to be washed. I think it's the biggest outdoor laundry in the world. It is not an attraction but I think it's worthwhile to go and have a look at this amazing manual 'washing machinary'.
Each of the washers has their own washing pen. India is not a clean country but their clothes are surprisingly white and clean!