World Expo is an amalgam of architecture styles. The section bordering San Francisco holds the Men In Black attraction and is themed - quite well - to the 1964 World's Fair's New York State pavilion. The other half of World Expo holds the cartoon-themed Simpsons Ride. Fortunately, the two attractions sit far enough apart that their clashing themes don't often appear together.
The Men In Black pavilion is a great subject for nighttime photographs. Try standing on the walkway between Disaster! and Men In Black. Good nighttime photos of The Simpsons Ride can also be taken from near the Disaster! building.
World Expo holds two attractions and (for now) no restaurants. We expect an expansion of the Simpsons area to include new dining options when it's complete, some time in late 2013.