My two cents...

Hi all. One thing I forgot to mention is to think outside the square. Is there even any reason why the invisible city has to be a 'CITY'? Why not....

• a series of tunnels or caves that can't be seen from above ground?
• an underwater city as seen from the POV of a fish? (ie- Atlantis) The character might only be able to breathe UNDERwater?
• a character who can fly or levitate, allowing access to doors in the ceiling or high on a wall.

Anyhoo... I'll be back in at AIM on Thursday. Good luck and enjoy!

Ben