I have a TV channel on Roku called Kanopy. This service requires you to have a library card to be able to watch videos (movies, documentaries, etc.). One of the things that is available is the Great Videos series which are lectures on various subjects. I just noticed that they have a 12 hour video on Gibbon's Decline And Fall Of The Roman Empire taught by a Harvard professor. Started watching it and I think it might appeal to many on this forum.