Pieces for the modular dungeon: A doorway at full height, a decorative floor piece in a contrasting style, and some doors.
I had two reasons for building the doorway: Standardizing the height for a full level of the dungeon, and using object source lighting to suggest how the dungeon might be lit, even from its abbreviated wall pieces. The lighting doesn't make sense though. It's the sort of gas-jet fire you find on modern fantasy movie sets, simply because it looks familiar to the audience. Not historically correct, but I knew that going in.