What did a Roman Palace actually look like?

I'm trying to build a Roman palace in Minecraft for my Latin class project, and so far I have been researching on what a Roman palace would look like (one for an emperor), but I can't find anything. Fishbourne Palace is a Roman villa (for you guys who might assume it was an emperor's palace [it was a general's house]). So anyone know what an emperor's palace might look like, with pictures and information on any? Full points for best answer.