Brady Haran of Numberphile and a whole bunch of other channels visited the observatory some years back and made some videos and interviews.
The Pope's Astronomer - Interview with Brother Guy: https://www.youtube.com/watch?v=Z0DAKaR16cY
The Pope's Telescopes - A tour of the observatory: https://www.youtube.com/watch?v=ccoGKAL6Qas
The Pope's Space Rocks - A look at their collection: https://www.youtube.com/watch?v=5OI4wb2XIZc