The themuseum.zip file you have requested: Maps / Multiplayer / The Museum - 2.76mb is not available. Perhaps try browsing all files for the game Doom III and upload any files you want to share or are missing. This is the only information we could locate:
This is a representation of a museum in my local area. Most rooms are there except two that got lots due to scaleing. And some areas have been changed to make deathmatch easier.