Location retrieval on city selection at zameen.Com

Dear
i have a technical query regarding the way you guys retrieving city based location information.

there are 2 basic queries and if you would answer then it will be of great favor, we want to consume it in one of our projects:

  1. From where you have got the data of city based locations?

  2. Any code snippet available over the internet to show that location that faster as i can observe on zameen.Com

thanks
aijaz

0333-2234310