I have a thing for Roman History, mostly because of a couple of great courses I had back in college, and I adore I, Claudius, both as a novel and the BBC dramatic series. Google recently announced the availability of a virtual tour of ancient Rome (circa 320ad) for their Google Earth tool, and it’s fantastic. Google Earth is free, as is the tour. You can get the details and download it here where they announcement is. There’s also a short movie demonstrating how it all works and what it looks like. It’s definitely worth checking out if you’re at all interested in Roman history.