Why are Castle Levels so Fun to Play?

I feel that there is no such thing as a bad castle level. Hope you enjoy my talk about this oddly specific topic. Subscribe if you liked this and want more.
Sources
Good FPS Map Design Article:
critpoints.net...
Der Eisencrache In Real Life Vlog:
• DER EISENDRACHE IN REA...
Castle Dimistrecu Comparison Photo: / castle_dimitrescus_mai...
Hohenwerfen Castle Pictures:
en.wikipedia.o...