Calling all history buffs.
This video from Khan Academy has been circling around the Interwebs for a few months now and it is really incredible.
A team called the Rome Reborn project set out to show people what ancient Rome looked like from the ground up and boy did they.
Indiana University professor Bernard Frischer serves as a guide in the video, which depicts Rome as it looked in 320 AD.
The whole thing is really amazing and well worth the watch: