a video showing the kohen gadol doing some of the avodos of Yom Kippur
The Menorah being lit in the third Beis Hamikdash
Bringing the Korban Pesach in the third Beis Hamikdash
On Erev Pesach, the Azarah would be flooded with blood from all the Pesachim. (The Kohanim actually stood on small stone projections, so they were above blood level, but I forgot to make that)