If you have the cheat mode enabled (see relevant thread), you can toggle debug mode by going to the console and typing "game.toggledebugmode". This will reveal the entire map and let you play with it revealed. However, it will not show you AI movements other than showing their locations at the end of each turn. The debug mode also will allow you to zoom to any of the AI's cities and see what they are building, as well as what each AI is researching and most of the AI's advisors.
In short:
1. Go to the .ini file and change CheatCode=0 to CheatCode=chipotle
2. Start up a game
3. Type ~
4. Type game.toggledebugmode