I've always been a bit of a history nut and am constantly on the hunt for new books and other resources to explore different bits of history and mythology. So historical fiction and RPGs are a cool way to combine two of my hobbies.

Requiem for Rome and Fall of the Camarilla are two of my favorite books in the new World of Darkness line-up. Roma Imperious from HinterWelt has been a fun setting for True20 fans to explore.

Well, Google has come up with a very cool resource for Google Earth:

See Ancient Rome in 3D

Not only useful for specifically Roman games, but plenty of fantasy games could use this tool for city design and setting elements.