The Grand Floridian Hotel in Walt Disney World seen at dusk reflected in Seven Seas Lagoon. This was taken from the beach outside the Polynesian Resort by DaveWilsonPhotography. More of his great work can be seen here.
Here's a picture of the Fountain of Nations - one of the coolest things in Epcot - at night. However it wasn't just any time at night, it was during IllumiNations: Reflections of Earth. Great exposure and composition by tcwmatt.