I'm pretty sure I posted this, or someone like me, posted this sometime back. But I thought I would link it again since it is such a great documentary. A lot of the ruins in the footage are gone now. The music is a bit annoying and the narration is a bit alkward but it doesn't matter.
http://www.youtube.com/watch?v=Bt1q5WhBAok
http://www.youtube.com/watch?v=Bt1q5WhBAok