We took too many pictures of stained glass, but it is just "so nice."
This is one of the alters from the whole other church and catacombs underneath the cathedral. Yes, and entire other church. It is here where pilgrims would come to see Thomas Beckett's tomb (I think). We weren't allowed to take pictures down here, which I found out right after I took this one:
The regalia of the Black Prince, who is buried here:
Here is the very site where Thomas Becket was martyred by Henry II: