Here is a list I found in the INT files area, they tell us what files go with what area.
This is for the modders:
*This is an exact cut and paste from the int file, so some are missing names, I do not know why.
BaneSS_B1=Krank Co. Toys
Batman=Physical Challenges
CW=TYGER Confiscated Goods Vault
CW_A1=Sewer
CW_A1_Corridor=Collapsed Corridor
CW_A1_Gotham=Gotham City
CW_A1_Sewer=Sewer
CW_A1_Storage=Confiscated Goods Vault
CW_C1=Harvey Dent's Campaign Office
Church=Church / Medical Center
Church_B1=Medical Center
Court=Solomon Wayne Courthouse
Court_B1=Solomon Wayne Courthouse
GCPD=Gotham City Police Dept.
GCPD_A1=Gotham City Police Dept.
GCPD_A1_Secret1=Ventilation System
GCPD_Global=GCPD Building
Hush_C1=Makeshift Surgery
IvyLair_B1=Poison Ivy's Lair
MadHatter_01=
MadHatter_02=Rabbit Hole
MadHatter_03=Wonderland
Museum=Museum
Museum_A1=Armory
Museum_B1=
Museum_B1Pit=Gladiator Pit
Museum_B2=Torture Chamber
Museum_B2_Secret1=Alcove
Museum_C1=Trophy Room
Museum_C1_Secret1=Trophy Room
Museum_C1_Secret2=Trophy Room
Museum_C2=War Room
Museum_S1=Iceberg Lounge
Museum_S2=Iceberg Chamber
Nora_B1=Storage Warehouse 5B
OW=
OWA=Park Row
OWB=Amusement Mile
OWC=Industrial District
OWD=Subway
OWE=The Bowery
OW_A1=Park Row
OW_A2=Park Row
OW_A3=Park Row
OW_A4=Park Row
OW_A5=Park Row
OW_A6=Park Row
OW_A7=Park Row
OW_A8=Park Row
OW_A9=Park Row
OW_B0=Amusement Mile
OW_B1=Amusement Mile
OW_B2=Amusement Mile
OW_B3=Amusement Mile
OW_B4=Amusement Mile
OW_B5=Amusement Mile
OW_B6=Amusement Mile
OW_B7=Amusement Mile
OW_C1=Industrial District
OW_C2=Industrial District
OW_C3=Industrial District
OW_C4=Industrial District
OW_C5=Industrial District
OW_C6=Industrial District
OW_C7=Industrial District
OW_D0=Subway Station
OW_D1=Subway Station
OW_D2=Subway Tunnels
OW_D3=Subway Terminal
OW_D3_Override=Subway Terminal
OW_D4=Subway Maintenance Access
OW_D5=Subway Maintenance Access
OW_E1=The Bowery
OW_E2=The Bowery
OW_E3=The Bowery
OW_E4=The Bowery
OW_E5=The Bowery
OW_E6=The Bowery
OW_E7=Arkham City Processing Center
OW_E7_Secret=Arkham City Processing Center
OW_E8=Arkham City Processing Center
PDLCIN=Shipyard
PDLCIN_A1=Dry Dock
PDLCIN_B1=Warehouse
PDLCIN_B2=Pump Room
PDLCIN_B3=Joker Shrine Room
PDLCIN_C1=Access Corridor A
PDLCIN_C2=Access Corridor B
PDLCOW=Industrial District
PDLCOW_B1=Amusement Mile
PDLCOW_B2=Amusement Mile
PDLCOW_B3=Amusement Mile
PDLCOW_B4=Amusement Mile
PDLCOW_B5=Amusement Mile
PDLCOW_B6=Amusement Mile
PDLCOW_B7=Amusement Mile
PDLCOW_C1=Industrial District
PDLCOW_C2=Industrial District
PDLCOW_C3=Industrial District
PDLCOW_C4=Industrial District
PDLCOW_C5=Industrial District
PDLCOW_C6=Industrial District
PDLCOW_C7=Industrial District
PDLCSM=Steel Mill
PDLCSM_B1=Loading Bay
ProcessingCenter=Arkham City Processing Center
Riddler_01=Riddler Room
Riddler_03=Riddler Room
Riddler_04=Riddler Room
Riddler_05=Riddler Room
Riddler_07=Riddler Room
Riddler_08=Riddler's Lair
Steel=Steel Mill
Steel_A1=Smelting Chamber
Steel_B1=Loading Bay
Steel_B1_Office=Manager's Office
Steel_B1_Secret1=Ventilation System
Steel_B1_main=Loading Bay
Steel_B2=Boiler Room
Steel_B3=Joker's Fun House
Steel_C1=Waste Exchange
Steel_C2=Assembly Line
Steel_C3=Freight Elevator
Steel_C4=Cooling Tunnel - B
Steel_C4_Secret1=Alcove
Steel_C4_Secret2=Ventilation System
Steel_C5=Cooling Tunnel - D
Tower=Wonder Tower
TygerBuilding=Confiscated Goods Vault
Under=Wonder City
Under_A3=Wonder Tower Foundations
Under_B2=
Under_B4=Wonder Tower
Under_B4_bis=Tower
Under_B5=Collapsed Streets
Under_B6=Security Control Center
Under_B6_bis=Observation Deck
Under_C1=Collapsed Streets
Under_C1_Secret1=Collapsed Streets
Under_C2=Wonder Avenue
Under_C2_Corridor=Secret Corridor
Under_C2_main=Wonder Avenue
Under_C2_part2=Wonder Avenue
Under_C2_part3=Wonder Avenue
Under_C3=Wonder Drive
Under_C4=
Under_C5=
Under_C6=
Under_S1=Chamber of the Demon
Under_S1_Secret=Chamber of the Demon
Under_S1_Stairs=Secret Stairs
Under_S2=
Under_S3=
Underworld=Wonder City
Zsasz_B1=
