Sitzungssaal image - FeReise

Here is a comparison between Treyarch version of the Reichstag's conference hall (Sitzungssaal, aka 'Hall of Diet') and the realistic one.

In reality, the majority of interiors inside should be completely destroyed by the ARSON ATTACK in 1933 and it was never rebuilt or renovated until the partial restoration in the 1960's. But seems like Treyarch had done an ALTERNATE REALITY once again... It looks like many damaged parts of the Building were already restored and decorated with newly NAZI eagle, flags and other stuff. However, some parts were still under renovating/reconstruction (especially inside the fictional BIGASS Halle), it seems like the restoration was probably interrupted by either intense Allied bombing raids or the arrival of Soviet troops at the Germany-Poland border.

Well, Treyarch devs had done great with this part. However, mistakes still at large, notably:
1) 'Dome' area should be on the top of this conference hall, the fictional and unnecessary LARGE Halle RUINS everything.
2) Fictional Staircases: Although vital to the storyline, but seriously, they need a better arrangement (relocation and such).
3) Fictional passage to the dome (after we cleared two groups of defenders on the left (northern) balcony): As I told ya, that screwed up BIG-Halle ruins everything. Treyarch might had no choice but to create this 'passage' to lead Reznov and the gang up above into the 'Dome' part
And since this DOME was supposed to be on the top of this conference hall in reality, so the NEW method to get up over there must be created for the possibly remastered/reboot of the game.
4) This conference hall is larger than the original, it left so many empty spaces on the ground part of the hall.
5) The Great Imperial Salon (des Großen Kaiserlichen Salons) on the left balcony, is replaced by the fictional staircase entrance.
Source (Page 14): Stadtbild-deutschland.orgäude-platz-der-republik-spreebogen/&pageNo=14