When I am having a difficult time imagining foreign worlds, I use any 
number of these techniques to start the words flowing...  

* Write about an interesting person or object
* Describe an object and give it a history
* Invent and describe a best friend and the adventures you have had
* Write about the state of the world as it would be if you owned it
    (or everything on it :)
* Read old diaries and writings
* Change the end of a favourite story
* Streamwrite
* Write an emotion
* Look at a favourite drawing or photograph and imagine that you 
    are wandering through it... who is there with you?  Where are
    you walking to or coming from?
* Write about where you would be now if you had any choice in the
    matter
* Where will you be ten years from now?  Where would you like to be?

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These ideas may be of little use to you but they are of great assistance 
to me.  If you would like to share an idea, drop me a note and I will
include your suggestion and your name as soon as possible.

Happy writing!