[SPOILER] Brennenburg Castle's overall layout (complete map)

[cantremember]

I always broken the chapters as such:

Intro: Raining hall & old archives
Chapter 1: Entrance hall (with Archives, Wine cellar and laboratory)
Intermezzo 1: Distillery and old archive tunnels
Chapter 2: Back hall (with Guest room, Study, Machine room and Storage)
Intermezzo 2: North and South prison block
Chapter 3: Cistern entrance (with Cistern, Morgue and Control room)
Intermezzo 3: Sewers
Chapter 4: Nave (Cells, Trancept, Choir, Chancel)
Finale: Inner Sanctum and Orb Chamber

But I guess it doesn't really matter.