
The design of the Tower of Babel in the game's cinematic intro features a brief glimpse of a section that appears to be modeled after the front of Sleeping Beauty Castle at Disneyland in California.

The Science Adviser's appearance is based on Civilization creator Sid Meier.
If you change the date on your PC to January 8th (Elvis's birthday) and start a Regicide, Mass Regicide, or Capture the Flag/Princess game, the flag units will turn into Elvis.