The results of excavations show the development of the cities of Harappa and Mohen-Jo-Daro of Indus Valley Civilization. The city was well planned. Roads were parallel to each other and at places were perpendicular also. The bricks were used of ratio 4:2:1 for length, breadth and height. The drainage system was underground and they also had a port.  
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The city was very well planned. Roads were parallel and formed 90 degree angles where they met. They used bricks of same size for construction. They also had a drainage system which was underground, They also had a port.
The cities of indus valley civilisation were very well plannes as they had proper drainage system and the srreets were made in such a way that blowing air clean them automatically.they had other things also like great baths which were created according to mathematical formulas