World Expo holds the MEN IN BLACK Alien Attack attraction and is themed—quite well—to the 1964 World's Fair's New York State pavilion. In addition, it houses a fabulous re-creation of the town of Springfield from The Simpsons television series.
The MEN IN BLACK pavilion is a great subject for nighttime photographs. Try standing on the walkway between Disaster! and MEN IN BLACK.
On the Springfield end, what started with The Simpsons Ride, a Kwik-E-Mart store, and some carnival games expanded hugely in 2013. This area now offers guests an immersive experience: while strolling the streets of Springfield, they can visit Moe's Tavern for some Duff Beer or a Flaming Moe, or grab a Krusty Burger from the Fast Food Boulevard food court. You might even run into Sideshow Bob or Homer Simpson while heading to the Kang & Kodos' Twirl 'n' Hurl ride!