This is too cool, I wish it was online already. Discovery News reported on a team of scholars and programmers has been busy for a decade building a 3D, digital model of Rome from A.D. 320 that can be navigated and explored.
Theater of Marcellus at night.
However, this moves beyond being just a great tool for exploring history. The designers have said they "want to make it part of an online journal that will publish scholarly articles documenting how ancient buildings appeared." That's a radical, but amazing, shift away from what one expects a scientific journal to look like.
But wait, there's more! Behind door number three, we discover that the program has been linked to Google Earth and the Internet at large. If you ask for information about a building in the world, a window pops up that "displays Google Earth with the exact coordinates of the virtual building and provides links to online documents about the building."
Now that is a way to fuse multiple technologies for a great purpose.